Lectures

How to speak chemistrian

How to speak chemistrian

Learning to talk about chemistry can be like learning a foreign language, but Hank is here to help with some straightforward and simple rules to help you learn to speak Chemistrian like a native.

The science of terrorism

The science of terrorism

Science can help create understanding where there is none, but is it possible to study and understand terrorists if we’re too busy doing everything we can to stop it? Terrorism is notoriously difficult to study because governments constantly subpoena scientists lists of contacts, making source anonymity impossible.

How do you know whom to trust?

How do you know whom to trust?

We believe a lot of things because we’ve been told – from our personal acquaintances and also experts. With so many belief systems being passed to us, how do we know whom to trust? Using contemporary examples, Ram Neta explains when listening to experts is a good idea…and when it’s not.

Next generation telescopes to solve the biggest mysteries of the Universe

Next generation telescopes to solve the biggest mysteries of the Universe

This episode of the ESOcast relates how ESO – based on experience gathered over the past fifty years as the most powerful observatory in history – is going to satisfy the eternal longing of astronomers: the construction of even bigger telescopes.

Chewing Gum

Chewing Gum

Rob Linforth is an expert on food chemistry and flavour science – even though one of his nostrils does not work properly!

The Vacuum is NOT Empty

The Vacuum is NOT Empty

An atom is mostly empty space, but empty space is mostly not empty. The reason it looks empty is because electrons and photons don’t interact with the stuff that is there, quark and gluon field fluctuations.

The key to growth? Race with the machines

The key to growth? Race with the machines

As machines take on more jobs, many find themselves out of work or with raises indefinitely postponed. Is this the end of growth? No, says Erik Brynjolfsson — it’s simply the growing pains of a radically reorganized economy. A riveting case for why big innovations are ahead of us … if we think of computers as our teammates. Be sure to watch the opposing viewpoint from Robert Gordon.

Why do mosquitoes prefer some people to others?

Why do mosquitoes prefer some people to others?

James May imparts some very interesting facts on mosquitoes. So why do they prefer
some people to others?

Gluten

Gluten

Gluten is a sticky protein composite found in cereal grains. Hank gives us some insight into the importance of gluten in history, as well as its impact on health in our own time.

The Market Revolution

The Market Revolution

John Green teaches you about the Market Revolution. In the first half of the 19th century, the way people lived and worked in the United States changed drastically. At play was the classic (if anything in a 30 year old nation can be called classic) American struggle between the Jeffersonian ideal of individuals sustaining themselves on small farms vs. the Hamiltonian vision of an economy based on manufacturing and trade.

Infinite Primes

Infinite Primes

How do we know there are an infinite number of primes? Dr James Grime explains, with a bit of help from Euclid.

10 top time-saving tech tips

10 top time-saving tech tips

Tech columnist David Pogue shares 10 simple, clever tips for computer, web, smartphone and camera users. And yes, you may know a few of these already — but there’s probably at least one you don’t.

25 extremely notorious gangsters

25 extremely notorious gangsters

Gangsters are members of gangs or professional criminal organizations who are known for their involvement in the conduct of acts prohibited by law, especially assassination. For decades, these people have been active in several areas of the world particularly in Europe, Asia, United States and Latin America. Most of these gangsters have become infamous either because of the severity of crimes they committed in the past, the fashion through which they assassinated their victims, or because of the popularity of the people that they killed. Gangsters normally choose to become part of gangs as this provides them with a certain level of organization and support that they cannot get when they operate alone. Here is a list of the top 25 extremely notorious gangsters in history.

Tornados from Below and Above

Tornados from Below and Above

What causes a Tornado to form? How can we foresee them? New technologies are giving people more and more time to prepare and seek shelter in a time of crisis, whether it be from information gathered on the ground or spectacular visual mapping from new satellites in space. Engineer and storm chaser Tim Samaras gives his unique perspective and insight on the situation.

What Is Déjà Vu?

What Is Déjà Vu?

Dr. Michio Kaku explains one theory behind déjà vu and asks, “Is it ever possible on any scale to perhaps flip between different universes?”

Back to top