What Cramer's rule is, and a geometric reason it's true

In this video Paul Andersen explains how reaction intermediates are created in elementary steps and may not appear as either a reactant or product. Experimentation is used in Chemistry to identify reaction intermediates.

We’re used to competitions with clear winners and losers: baseball games, math olympiads, pie-eating contests, and games involving thrones. We crown a victor and everyone else goes home empty-handed! In business, though, there isn’t just...

What if we could "grow" clothes from microbes, furniture from living organisms and buildings with exteriors like tree bark? TED Fellow Suzanne Lee shares exciting developments from the field of biofabrication and shows how it could help...

The milk industry produces in excess of 840 million tons of products each year. Why do humans drink so much milk? And given that all mammals lactate, why do we favor certain types of milk over others? Jonathan J. O'Sullivan describes how...

Have a problem with many competing variables? Why not solve it with a computer algorithm based on cooling metal?

Given the option, few would choose to buy products that harm the earth -- yet it's nearly impossible to know how most consumer goods are made or where they're sourced from. That's about to change, says supply chain innovator Markus Mutz....

In this video Paul Andersen explains how a spontaneous process may take either the thermodynamically controlled or the kinetic controlled pathway. If the activation energy determines the path taken then the process is under kinetic...

You can't open up a magazine without seeing someone with impossibly smooth skin selling some sort of "anti-aging" cream, but could some of these products actually work?

To keep their solid gold Nobel Prizes away from the Nazis, James Franck and Max von Laue sent their medals to trusted colleague Niels Bohr. But when Germany invaded Denmark in 1940, the medals were no longer safe - so chemist George de...

The big blue buildings of Ikea have sprouted solar panels and wind turbines; inside, shelves are stocked with LED lighting and recycled cotton. Why? Because as Steve Howard puts it: “Sustainability has gone from a nice-to-do to a...

The global pandemic led to a drop in outdoor air pollution, but it also led to an increase in indoor air pollution - and our exposure to it.

Designer Ross Lovegrove expounds his philosophy of "fat-free" design and offers insight into several of his extraordinary products, including the Ty Nant water bottle and the Go chair.

What if you could eat chicken nuggets without harming a chicken? It's possible through "cellular agriculture," says Isha Datar. In a talk about cutting-edge science, she explains how this new means of food production makes it possible to...

We're willing to pay hundreds or thousands more for a specific brand name item, but sometimes it can be tempting to go the way of the knock-off for a fraction of the price. The counterfeit industry is huge and isn't going anywhere, and...

2012 may be the year of 3D printing, when this three-decade-old technology finally becomes accessible and even commonplace. Lisa Harouni gives a useful introduction to this fascinating way of making things -- including intricate objects...

In 2019, Amazon signed the Climate Pledge, a commitment to become a net-zero carbon business by 2040. Dave Clark, Amazon's chief of consumer retail, and Kara Hurst, head of the company's sustainability efforts, sit down with entrepreneur...

Convince just 100 key companies to go sustainable, and WWF's Jason Clay says global markets will shift to protect the planet our consumption has already outgrown. Hear how his extraordinary roundtables are getting big brand rivals to...

From packing peanuts to disposable coffee cups, each year the uS alone produces some two billion pounds of Styrofoam -- none of which can be recycled. Frustrated by this waste of resources and landfill space, Ashton Cofer and his science...

We're heading for a world population of 10 billion people -- but what will we all eat? Lisa Dyson rediscovered an idea developed by NASA in the 1960s for deep-space travel, and it could be a key to reinventing how we grow food.

In this video Paul Andersen explains how Le Chatelier's Principle can be used to predict the effect of disturbances to equilibrium. When a reversible reaction is at equilibrium disturbances (in concentration, temperature, pressure,...

An effective COVID-19 vaccine is just the first step in ending the pandemic, says global health strategist Johanna Benesty. In this illuminating talk, she explores the various barriers to "equitable access" -- making sure COVID-19...

Antimony is toxic to inhale, swallow and touch, but it might also save your life.

You founded a company that manufactures meatless burgers that are sold in stores worldwide. But you've recently received awful news: three people in one city died after eating your burgers. A criminal has injected poison into your...