Topic: temperature

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Step into a summer igloo (in 360°) as it’s being built

Though they're made from blocks of compacted snow, igluit (igloos) keep their residents well-sheltered by insulating from the cold and wind outside. In this 360° video from The New York Times, Adami Sakiagak and Tiisi...

Sandwich Bag Fire Starter

The intensity of sunlight on Earth is about 1300 Watts per square meter. When you focus the sun's rays using a magnifying glass (or in this case sphere of water) you can increase the intensity roughly ten thousand fol...

How dead is the Great Barrier Reef?

Australia's Great Barrier Reef is the largest coral reef system in the world and the only living structure visible from space. Although ecosystem managers in Australia have worked hard to preserve the reefs, the past ...

The Arctic vs. the Antarctic

If you're first learning about them, the Arctic and the Antarctic might be a bit confusing. Which one is which? Where are the penguins and where are the polar bears? Which is made of melting ice and which is a desert?...

Readying the Webb Telescope for Launch

Launching "the most sophisticated space science telescope ever constructed" into space is a complex process, and testing is a huge part of it. The James Webb Space Telescope's intricate hardware and technical systems ...

The scientist that grows ‘identical twin snowflakes’

Snow crystals form when humid air is cooled to the point that molecules of water vapor start sticking to each other. In the clouds, crystals usually start forming around a tiny microscopic dust particle, but if the wa...

Building Frozen Castles with the Master of Ice

Every year, from January 5th to around February 25th, the city of Harbin, China transforms into a frozen city of light for the annual Ice and Snow Sculpture Festival. The sculptures are massive architectural feats con...

The stories behind Fahrenheit and Celsius

Fahrenheit (°F) is a unit of measurement for temperature. Daniel Gabriel Fahrenheit (1686–1736) is the inventor of the mercury-in-glass thermometer and the aforementioned scale of measurement. In this Veritasium video...

Science and survival on Continent 7: Antarctica

At -100 degrees F, you'll survive for less than 3 minutes and burn 5,000 calories a day, and boiling water can turn to snow instantly. And, at less than 1% humidity, your body will lose water just breathing. This is S...

The 3-million-year old Ningwu ice cave never thaws

White stalactites hang down from every surface, and the walls and floors are glazed with thick ice. The Ningwu ice cave, also referred to as Wannian Ice Cave in Ningwu County, China, is a unique phenomenon: The subter...

The seafloor microscope that can reveal corals’ secrets

See the seafloor like you've never seen it before, thanks to this microscope, the first to show 1.6 millimeter-sized coral polyps up close in the wild. An effort to better understand these lifeforms in the face of cor...

Climate Change 101 with Bill Nye + solutions great and small

What is climate change, what causes it, and how do we mitigate its effects? Bill Nye summarizes Climate Change 101 in concert with National Geographic's Climate Change issue and COP21, the December 2015 Paris Climate ...

A vortex of bubbles twirls pufferfish as cold & warm waters collide

A vortex of bubbles forms like a lasso in the waters off the coast of Socorro Island, where cold California currents collide with warm equatorial waters. It's a seasonal phenomenon in Mexico's "little Galápagos", appr...

How to Make a Cloud in Your Mouth – Physics Girl

To make a cloud in your mouth -- yes, this is a very cool trick that actually works with practice -- you'll need to make tiny water droplets in your mouth. Then up the pressure. Physics Girl Dianna Cowern demonstrates...

For sea otters, lounging around is the key to conserving energy

Sea otters are not only known for being adorable, but also for a lack of blubber to help keep them warm. Because they live in water that’s far too cold for their bodies, sea otters not only rely on their super fantast...

How is an ice sculpture made? SciFri investigates frozen water

What's So Cool About Frozen Water? Art and science come together to uncover some ice-expert-level details in this 2012 Science Friday report. Shintaro Okamoto, founder of NYC's Okamoto Studio, and Erland Schulson, Dar...

Why do carrots taste sweeter in the winter?

From the University of California’s Fig.1 series, Molecular Biologist Liz Roth-Johnson explains why cold weather makes carrots taste more sweet: Because plants are immobile, they must develop defense techniques aga...

The Fantastic Fur of Sea Otters – Deep Look

Sea otters are creatures who live in water that's far too cold for their bodies. There are other animals, like whales and sea lions, that are insulated from the cold by blubber, a layer of fat under their skin, but as...

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