You've probably heard that processed foods are bad for you. But is that true for all of them? And how do we know?

Imagine if a wizard of meatless dining suddenly appeared on Earth and with one wave of a wand wiped away all meat from our shelves— along with any desire to eat it. Farm animals destined for food vanish, whisked away to another planet....

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...

How much land mass would renewables need to power a nation like the UK? An entire country's worth. In this pragmatic talk, David MacKay tours the basic mathematics that show worrying limitations on our sustainable energy options ... and...

How do we consume data? At TED@SXSWi, technologist JP Rangaswami muses on our relationship to information, and offers a surprising and sharp insight: we treat it like food.

As we reboot the world's economy, Geoff Mulgan poses a question: Instead of sending bailout money to doomed old industries, why not use stimulus funds to bootstrap some new, socially responsible companies -- and make the world a little...

John Gerzema says there's an upside to the recent financial crisis -- the opportunity for positive change. In this talk, he identifies four major cultural shifts driving new consumer behavior and shows how businesses are evolving to...

Over 100,000 metric tons of caffeine are consumed around the world every year. That's equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focused, and energetic, even if we haven't had enough sleep - but it can...

Today Shini explains the law of conservation, beginning with simple, steady-state systems. We’ll discuss conversion and yield, accumulation, and how generation and consumption can affect how much accumulation there is in a system.

You might have had the experience of heading out for the night, feeling good, snapping a few selfies with friends that memorialize for all time how great your hair is looking. But the next day, you’re tagged in someone else’s photos and…...

Fresh water is essential for life -- and there's not nearly enough of it for the world right now. Why is that, and what could we do? Christiana Z. Peppard lays out the big questions of our global water problem. And no, shorter showers...

If being alive on Earth were a contest, humans would win it hands down. We're like the Michael Phelps of being alive, but with 250,000 times more gold medals. Today Hank is here to tell us the specifics of why and how human population...

When I was a kid, my parents refused to let me drink coffee because they believed it would "stunt my growth". It turns out, of course, this is a myth. Studies have failed, again and again, to show that coffee or caffeine consumption are...

Meat consumption is the leading cause of climate change. Animal agriculture accounts for roughly half of global emissions. On average, each American eats 275 pounds of meat a year, compared to the global average of 90 pounds per person...

science kids microplastics and my health what i need to know V1-0004

This video highlights the potential harmful effects of microplastics on human health, including DNA damage, cancer, and hormone disruption. Research has shown that...

Howcast - The body mass index, or BMI, is a tool used to assess your weight status based on your height. Use these tips to lower your BMI.

Gum disease is caused by the buildup of plaque along the gum line, which releases toxins that irritate the gums and cause them to become inflamed. Prevent gum disease by keeping your gums healthy.

This video discusses the potential use of hibernation in space travel to mitigate the physical and psychological challenges faced by astronauts. Researchers in Italy are experimenting with a synthetic molecule called daddle to induce...

Learn about the concept of passive housing and its benefits. Architect Philippe Madec explains how passive design, including optimal orientation and solar panel use, leads to significant energy savings. Residents share their...

The Victorian Era lasted throughout most of the 1800s. This period of time was known for its technological advancements and for its increased social mobility. And with that came new beauty trends that spread from Britain to the United...

The SI unit of power, the rate at which energy is converted or work is done.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....

An animal that eats both meat and plant materials.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...

A machine that can work under its own power forever would revolutionise our world. Could this ever be possible?



Physics - Energy And Radioactivity - Learni

ng Points.

A perpetual motion machine is a...

In spaceflight, the time period within which a rocket must be launched in order to achieve the desired orbit or destination.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using...