Antarctic bacteria live on air and make their own water using hydrogen as fuel

Author: Pok Man Leung, Chris Greening, Steven Chown
Date: November 15, 2021
Pok Man Leung, Monash University; Chris Greening, Monash University, and Steven Chown, Monash University Humans have only recently begun to think about using hydrogen as a source of energy, but bacteria in Antarctica have been doing it for a billion years. We studied 451 different kinds of bacteri...

Why Do Whales Sing?

Author: Stephanie Sardelis
Source: TED-Ed
Date: November 2016
Communicating underwater is challenging. Light and odors don't travel well, but sound moves about four times faster in water than in air — which means marine mammals often use sounds to communicate. The most famous of these underwater vocalizations is undoubtedly the whale song. Stephanie Sardelis...

Inside the Killer Whale Matriarchy

Author: Darren Croft
Source: TED-Ed
Date: December 2018
Pods of killer whales inhabit the waters of every major ocean on Earth. Each family is able to survive thanks mainly to one member, its most knowledgeable hunter: the grandmother. These matriarchs can live 80 years or more and their expertise can mean the difference between life and death for their ...

The Survival of the Sea Turtle

Author: Scott Gass
Source: TED-Ed
Date: July 2012
Watch the miraculous journey of infant sea turtles as these tiny animals run the gauntlet of predators and harsh conditions. Then in numbers see how human behavior has made their tough lives even more challenging. [Lesson by Scott Gass, directed by Johan Sonestedt and Veronica Wallenberg, narrated b...

What Would Happen if Every Human Suddenly Disappeared?

Author: Dan Kwartler
Source: TED-Ed
Date: September 2018
Human beings are everywhere. With settlements on every continent, we can be found in the most isolated corners of Earth’s jungles, oceans, and tundras. Our impact is so profound, most scientists believe humanity has left a permanent mark on Earth’s geological record. So what would happen ...

Is the Weather Actually Becoming More Extreme?

Author: R.Saravan
Source: TED-Ed
Date: August 2020
From 2016 to 2019, the world saw record-breaking heat waves, rampant wildfires, and the longest run of category 5 tropical cyclones on record. The number of extreme weather events has been increasing for the last 40 years, and current predictions suggest that trend will continue. So, is the increase...