Office for Science and Society

Have Lectures Will Travel

The '"Chemistry for the Public" program has developed over 60 lectures on a host of topics of interest. These lectures are offered to educational institutions, study groups, social clubs and professional organizations with the level, format and length of the presentations tailored to fit any audience. The material is normally presented with slides and therefore a screen is required. Listed below is a description of some of the most popular topics.

Should you be interested in having one of these lectures presented to your group, in either English or French, please contact: J. S. ( joe.schwarcz@mcgill.ca ), A. F. ( ariel.fenster@mcgill.ca ) or D. H.
( david.harpp@mcgill.ca )

The Magic of Chemistry (A. F., J. S. and D. H.)
This unique stage show combines chemical demonstrations, slide projection, music and yes, good old fashioned stage magic to bring life to the world's oldest profession in an exciting, entertaining and informative fashion. The show offers something for everyone: to the uninitiated it is a glimpse into the wonders of chemistry; to the expert it is a novel approach to the presentation of an ancient and basic science.

Did you know that…? (A. F.)
Discover the science behind life's many little mysteries; the connection men sweat and female pigs or how the holes are formed in Swiss cheese and which wine to drink to fend off hypertension. Find out how M&M's helped the Allies win WW II and why there is a chemical connection between truffles and love or to lose weight without even trying. In this lecture you’ll discover the answer to these questions as well as to a number of other little mysteries of life!

Pesticides: Public Perception and Reality (A. F.)
We live in a world filled with anxiety. We worry about mercury in our teeth, dioxins in our toilet paper, aluminum in our deodorants. But more than all we worry about the safety of our food supply. This presentation, based on examples of recent "scares", will examine the public's perception of the potential dangers of pesticides and contrast them with the actual known risks, to both consumers and growers.

Homeopathy-Dilution or Delusion? (A. F.)
The theory of homeopathy introduced by Samuel Hahnemann in the 18th century states that toxic substances, diluted to an extent that there essentially nothing left in solution can be used to treat a variety of medical problems. Even though there is no scientific basis for such principles, homeopathic preparations are widely used around the world. This lecture examines critically the history and the principles of homeopathy as well as possible reasons for its popularity.

Nanotechnology: The Next Big Thing! (A. F.)
For many, nanotechnology, the engineering of functional systems at the molecular scale (nanometer), is the impetus for the next Industrial Revolution. The technology is already available in a variety of products ranging from stain-resistant textiles to antibacterial bandages. In the future there are visions of molecular motors powering nano-tools, of nano-robots cleaning up clogged arteries and of nano-materials strong and light enough to build an elevator to the moon. On the other side some see nanotechnology as a new Frankenstein, bringing havoc on earth. What is fact and what is hype? This lecture describes and assesses the pros and cons of a technology too "small" to ignore.

Gemstones -The Science of Nature's Beauty (A. F.)
Throughout history gemstones have stood as symbols of wealth power and of course, love. Today, as more people can enjoy these magnificent gifts of nature it is important to learn what to look for in a gemstone. Find out about the composition of emeralds, sapphire and other colored gems and learn how to distinguish fakes from real gems. Discover the unique nature of pearls and the meaning of the 4C's in diamond buying. A lecture that is of interest for all who appreciate the value of beauty.

The Human Side of Scientists (A. F.)
Many people see scientists as completely different from the rest of the population; they are too involved with their research to experience normal feelings or emotions. This lecture put this myth to rest by examining the unknown side of famous scientists. It looks, for example, at the amorous escapades of Dimitri Mendeleev and at the tragic love life of Marie Curie. It also exposes the vicious infighting which accompanied the discovery of insulin by Banting and Best and reveals tales of deception as in the recent story of "Cold Fusion". A most lively and entertaining lecture.

Science and Art: Facts and Fakes (A. F.)
Science has become an essential tool to the analysis of works of art. Modern techniques, from macro-photography to X rays can be used to reveal not only the condition and the history of masterpieces but also their authenticity. This lecture shows the application of these techniques to a variety of works from Vermeer to Van Gogh. Famous cases of forgery ranging from the Shroud of Turin to the notorious Van Meegeren affair are also examined.

The Colors of Art: History and Properties of Artists' Pigments (A. F.)
This lecture explores the history and the science of the various pigments used by the great masters, Titian, Rembrandt, Monet and others. Discover the unusual origins of Indian yellow and learn the secret of ultramarine. Understand the reasons for the widespread popularity of lead white and of the versatility of cadmium paints. A presentation that highlights the complementary relationship that exists between science and art.

The Cholesterol Controversy: Beyond Oat Bran (J. S.)
It is a well recognized fact that heart disease is the number one killer in North America. Over the last few years it has also become clear that nutrition plays an important role in the onset of arteriosclerosis, or blockage of the arteries. It is important that everyone be aware of the fact that the risk of heart disease can be reduced by proper eating, and if need be, by the use of medication. This lecture discusses the ins and outs of saturated and unsaturated fats, fiber, "good" and "bad" cholesterol, the interpretation of blood cholesterol levels and the proper use of cholesterol reducing drugs. Indeed, the "cholesterol controversy" is no longer a controversy. It has now been shown scientifically that high blood levels of cholesterol cause heart disease and that reduction of these levels reduces the risk. The time has come to apply the scientific findings to our lives.

The ABC's of Vitamins (A. F.)
The use of vitamins is controversial. On the one hand traditional nutritionists tell us that a balanced diet provides us with all the nutrients we need, while some other scientists urge us to take supplements, often in high doses, to "achieve optimum health." Beyond all the hype recent research reveals that vitamins likely play a more important role in our lives than just the prevention of deficiency diseases such as scurvy, beriberi, or rickets. For instance, the role of Vitamin A, C, E and of Beta Carotene as antioxidants in the prevention of heart disease and cancer is becoming established. At the same time it is also important to understand that large doses of certain vitamins can be harmful and that many claims made on behalf of the benefits of vitamin supplementation are unsubstantiated.. This lecture discusses the scientific background of vitamins as well as the most recent available research in an objective fashion.

Fats and Flab: The Science of Weight Control (J. S. or A. F.)
Whereas it estimated that about 30% of the population in North America is obese over 90% "think" that they need to lose weight. Thus, it is not surprising that the "Diet Industry" represents a $35 billion business in North America. It promises to "shrink away pounds" and "melt away fat" by a variety of nutritional programs and techniques. The truth behind these claims is explored with particular reference to popular "Scarsdale," "Atkins," "Pritikin," and "Fit for Life" diets. The inherent dangers of some of these regimens is pointed out and sensible diets are discussed. The chemistry of weight gain and weight loss is examined with incorporation of the latest research dealing with "brown fat," enzymes and hormones. Understanding of the scientific principles behind weight gain easily leads to the difference between dietary nonsense and established fact.

Herbs: Hype and Hopes (J. S.)
Herbal supplements have escaped from health food stores and are filling the shelves of pharmacies. They promise to prevent and in some cases cure disease. What is the truth? Is there magic behind echinacea, blue-green algae, ginseng, St. John's Wort and Evening Primrose Oil? This presentation explores the fascinating world of herbs from a historical and current perspective.

Conjurers, Charlatans and Science (J. S.)
Conjurers are honest charlatans who often make use of scientific principles for the purpose of entertainment. Classic effects such as changing water into wine, levitating into the air and disappearing in a puff of smoke rely on a familiarity with some aspect of science. This cruise through the history of scientific magic, peppered with many "tricks," should captivate young and old alike.
Quackery (J. S.)
Quackery arises out of the weaknesses of science. When scientists cannot offer ready cures for diseases such as cancer, arthritis or the common cold, then quacks rush in with their at worst dangerous and at best unproven "cures." It seems that a quack will never say "I don't know." There is always some secret remedy to be offered to cure any disease, for a price of course. This presentation examines the scientific basis behind many such current and past "alternative therapies."

Science and the Media (J. S.)
Most of the scientific information that the average person gathers stems from the "media," which includes the printed word, movies, radio and TV. How accurate is the scientific information that is presented? What is the image of the scientist that the public derives from TV and the movies? Can we really believe the "science" on those half hour TV "infomercials?" Are stories on "60 Minutes" always scientifically accurate? What is the scientific basis of some best sellers like "Fit for Life?" These questions as well as a number of others (can you really cure arthritis by putting a raw potato in your bra?") which have been raised on the speaker's weekly phone-in show on chemistry will be addressed in an informative and entertaining fashion.

Visual Aspects of Symmetry (D. H.)
The concept of symmetry is a fundamental and unifying theme in science, nature and our modern society. The importance of this concept ranges from mathematics to paintings and architecture. This presentation examines a variety of these topics with an emphasis on the visual arts, music and nature. Extensive use of pictures will enhance this visual approach to the subject. A straight-forward section on the use of symmetry in chemistry will be included.

Crime and Detection: The Story of Forensic Science (J. S. or A. F.)
Sherlock Holmes solved criminal cases only with the help of his magnifying glass and his sense of observation. Today the police can make use of a vast array of scientific techniques from computer fingerprints analysis to DNA profiling. This lecture presents the history of forensic science together with some famous cases ranging from the story of the Poison Umbrella to that of O.J. Simpson.. The lecture concludes with an analysis of several well-known literature and movie thrillers from the chemist's perspective. The lecture is well-suited to a wide-ranging audience with or without a science background.

Crime in the Classroom (D. H.)
It goes without saying that modern society is rife with corruption of just about every flavor from the political level to drug dealing to shoplifting and of course to the university involving copying term papers and exams. This presentation chronicles a detailed investigation into aspects of exam cheating in the university. Detection methods based on computer analysis of exam papers for multiple choice questions will be described as well as preventative measures. Finally, the response of the University to the situation will be detailed.
"Aging: Who Needs It!"
Everybody wants to live long but nobody wants to get old. Can science solve this conundrum? What are we to make of claims which suggest that the secret of longevity lies in human growth hormone injections, or in sheep cell therapy or in popping anti-aging pills? Can we live longer just by eating less? Are antioxidants such as beta carotene or vitamin E the key to happy golden years. A look at the science behind these issues can be a real eye opener!

Cheers! The Chemistry of Wine (A. F.)
It is said that a meal without wine is like a day without sunshine. This lecture will provide the audience with all the necessary information to fully appreciate this best companion of good food. It presents the history of wine as well as the chemical aspects of fermentation and of aging. Recent studies suggesting that moderate wine consumption is beneficial to health are also examined in a critical fashion. This lecture, which is both informative and humorous, concludes with an introduction to the "science" of wine appreciation with particular reference to the understanding of wine labels and the proper technique of wine tasting. A pleasure for all, from the experienced oenophile, to the wine lover "in waiting."

The Chemistry of Love (J. S. or A. F.)
This presentation features a lighthearted but scientific look at a topic of interest to all. The presence of sex attractants in insects constitute the background to a discussion of analogues to these compounds in humans; "love molecules" that control our emotions from the initial attraction, to infatuation, and finally long term attachment. The lecture includes a description of aphrodisiacs in history and of the more modern, and effective, analogues such as Viagra. This talk is of interest to anyone that ever has been, is at present or ever plans to be "in love".

Science and Beauty: The World of Cosmetics (A. F.)
About $30 billion are spent every year on cosmetics in North America. Unfortunately, our choices of products are usually more influenced by advertising than by consideration of effectiveness. Just what do moisturizers and wrinkle creams do? Are exotic and expensive products worth the extra cost. What is the best way to protect our appearance from the ravage of aging? This lecture, presents the principles behind the mode of action of creams, lotions and other cosmetics so as to provide the audience with the tools to make informed decisions.

Over the Counter Drugs (J. S. or A. F.)
Hundreds and hundreds of over-the-counter drugs vie for attention in the drugstore promising to treat or cure a variety of ailments. A closer examination of these products reveals, however, that while the brand names are numerous, the active ingredients are limited to a relatively small number. Interesting observations become apparent when familiar brands are stripped of high powered advertising and are compared to "generic" drugs. In this lecture, pain relievers, cold remedies, antacids, allergy medications are discussed with a view towards their cost, safety and effectiveness.

Antibiotics and Superbugs: The End of Miracle Drugs? (A. F.)
Since the introduction of antibiotics, over 50 years ago, infectious diseases such as pneumonia and tuberculosis which were the leading causes of death in North America have been brought under control. Unfortunately, the effectiveness and ensuing popularity of antibiotics have also led to unforeseen problems. Today, there are serious concerns associated with the emergence of antibiotic-resistant "superbugs." This lecture examines the many causes, from over-prescription to the use of antibiotics in animal feed, which have led to this situation and describes the various avenues open to solving the problem.

The Power of Chemistry: From Black Powder to Rocketry (A. F.)
The story of mankind's use of chemical energy from gunpowder and explosives to modern rocketry and space travel. Demonstrations include black powder, smokeless powder, fuses and actual rockets. The concepts of combustion are illustrated and are used to describe the space program and its potential.

Miracle Materials: The World of Plastics (A. F. or J. S. or D. H.)
Our life would be unimaginable without the modern synthetic materials that chemical research has produced. We sleep on polyester sheets, we walk on nylon carpeting, we wear acrylic clothes and we pay with "plastic" money. This presentation traces the development of these miracle products from the early wood derivatives to the materials used in the space program. Accounts of the discovery of rubber, the story of nylon are mingled with the description of super-absorbent materials and bulletproof vests and are accompanied with numerous fascinating demonstrations.

Food of the Gods-The Science and Lore of Chocolate (A. F. or J. S.)
"Theobroma Cacao" is the South American coca tree from which chocolate is derived and Theobroma in Greek means "Food of the Gods." An appropriate name for what is a source of unequaled pleasure. This lecture examines the many fascinating facets of chocolate; its delicious history as well as the many steps which are required to yield its inimitable flavor and texture. Many interesting facts are revealed throughout this presentation. How M&M's helped the Allies win W.W.II, how the cherry gets into Cherry Blossom and why there is a chemical connection between chocolate and falling in love. The lecture concludes with the scientific explanation as to why some cannot resist their craving and become "chocoholics. "

The History and Science of Money-Real and Counterfeit (A. F.)
Money - we usually think of it more in terms as to how to earn it, win it, save it, or spend it rather than as to what money is or from where it comes from. Still money is a fascinating topic, whose story blends aspects of science, art and human frailty. The presentation traces the development of money from 3,000 BC in Mesopotamia when "cash" was based on measures of barley, to today where the introduction of color copying machines and desktop publishing has led to an explosion in fake bills. In this lecture, the audience will discover many interesting facts about money. How the dollar got its name and which chemical reaction can be used to detect counterfeit dollar bills; what is a watermark and how it is made and why Australia has switched to banknotes made from plastics. The lecture concludes with the presentation of the latest developments in currency security from Optical Variable Inks to Holograms.

"Genetically Modified Food-Boon or Bane?'' (J. S. or A. F.)
To supporters, the genetic engineering of food is a scientific triumph that should benefit both farmers and consumers by improving nutrition with the introduction of super foods and protecting the environment by reducing pesticide use. To critics, these "frankenfoods" represent a frightening foray into the unknown with potential for major health problems and irreparable damage to nature. In this heated debate, the truth is hard to find. This lecture examines critically the various conflicting claims, and aims at providing the latest scientific facts on one of the most controversial issues of recent times.

"Science and the Paranormal" (A. F. or J. S.)
Since the dawn of civilization man has been fascinated by phenomena which appear to lie outside the scope of science. Our history is peppered with accounts of psychics foretelling the future, mediums conversing with the dead and aliens in UFO's abducting earthlings. Today there is widespread belief that the moon and planets influence our behavior, that "psychic surgeons" can remove tumors without making incisions and that Uri Geller bends spoons by the power of his mind. Do these effects really lie outside the scope of modern day science? This lecture examines paranormal phenomena and describes how many of the effects can be explained by perfectly "natural" means. The presentation is highlighted by a number of "demonstrations" aimed at increasing the awareness of the need to evaluate "paranormal" phenomena by critical scientific methods.

"The Global Food Crisis: What caused it and how to fix it" (A. F.)
Over the last year the price of rice, wheat and other basic food has soared beyond the reach of the world poor. Food riots have exploded around the globe in countries as diverse as Mexico, Haiti and Pakistan. In Africa, which was already suffering from widespread food shortages, the situation has become critical. This lectures looks at the causes for the crisis, from the use of food crops in the production of biofuels to the emerging consumer societies in Asia. It then examines some of the possible solutions together with their chance of success.

"Our Daily Food - Poison or Potion?" (A.F)
In the past food was regarded as a source of sustenance and of pleasure. Not anymore; some now see danger lurking in every bite and worry about bacterial contamination, the presence of pesticide residues or the use of chemical additives. For others, food is a means of preventing or curing illnesses such as cancer or heart disease. Extensive scientific research has examined the links between health and our diet, but the data is often open to interpretation. This lecture compares and contrasts the public's perception of the risks and potential benefits of our food supply with the scientific view.

The lectures below are also available :

Keep Smiling: Teeth and Chemistry (A. F.)

Take Two Aspirins: Pain and Chemistry (J. S. or A. F. or D. H.)

Drugs and Disease: Discovery and Marketing (A. F. or D. H.)

Hold that Smoke: Tobacco and Health (A. F.)

Photography: History, Chemistry and Applications (A. F.)

Sweet Chemistry: From Sugar Cane to Aspartame (J. S. or A. F. or D. H.)

Atom Power: Boon or Boom? (A. F.)

The Smells of Chemistry: Perfumes and Sex Attractants (A. F.)

The Air We Breathe (A. F. or D. H.)