Record-breaking drought continues to scorch wide swaths of sub-Saharan Africa, from Somalia in the east to Niger in the west. Humanitarian groups say tens of millions are hungry and conditions are being made even worse by the...

Humans aren’t the only ones who have to worry about epidemics: meet six other animals who take their own precautions to avoid getting sick!

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Jacqueline Novogratz shares stories of how "patient capital" can bring sustainable jobs, goods, services -- and dignity -- to the world's poorest.

Keller Rinaudo wants everyone on earth to have access to basic health care, no matter how hard it is to reach them. With his start-up Zipline, he has created the world's first drone delivery system to operate at national scale,...

While living and working as a marine biologist in Maldives, Charles Anderson noticed sudden explosions of dragonflies at certain times of year. He explains how he carefully tracked the path of a plain, little dragonfly called the globe...

What do you think of people in poverty? Maybe what Jessica Jackley once did: "they" need "our" help, in the form of a few coins in a jar. The co-founder of Kiva.org talks about how her attitude changed -- and how her work with microloans...

Nearly 800 million people worldwide depend on cassava for survival -- but this critical food source is under attack by entirely preventable viruses, says computational biologist and TED Senior Fellow Laura Boykin. She takes us to the...

Ory Okolloh tells the story of her life and her family -- and how she came to do her heroic work reporting on the doings of Kenya's parliament.

This week, Emily Graslie is teaching you about human ancestry and geneaology, how we got to be the species we are, and why that matters in our zoomed out look at Big History.

The average global temperature is on the rise, evidenced by the ten warmest years on record happening since 2005. But this isn’t just about greenhouse gases preventing heat from escaping. Another culprit comes in the form of…clouds.

The researchers have found that almost all the illegal ivories are from recent poaching. Meanwhile, humans are not only animals that are farsighted!

People have been migrating and transplanting since before recorded history, and understanding the reasons why people migrate can help explain some of the cultural, economic, and political patterns we see around the world. Today, we’re...

Is it possible that the hundreds of scientists around the world that are looking for intelligent life are on a futile mission to nowhere –because there is actually NO OTHER intelligent species in the entire universe – The...

Howcast - Learn the difference between coffee and espresso from the experts at Third Rail Coffee in this Howcast video.

Howcast - Learn about the different types of coffee from the experts at Third Rail Coffee in this Howcast video.

Hint: it's a species that hails from Africa, where its name derives from.

This video follows a travel vlogger's journey through Ethiopia, exploring the country beyond stereotypes of poverty and conflict. Through interactions with locals, experiencing cultural traditions, and witnessing the country's progress...

Weighing 2,000 pounds and with characteristic mustache-shaped horns forming what's known as a "boss," this is one tough animal you wouldn't want to mess with.

Males can weigh more than 2,000 pounds!

See what tricks zookeepers employ to keep a giraffe calf focused on his bottle.

See what tricks zookeepers employ to keep a giraffe calf focused on his bottle.

Males can weigh more than 2,000 pounds!

See what tricks zookeepers employ to keep a giraffe calf focused on his bottle.

Hint: it's a species that hails from Africa, where its name derives from.