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The problem of light pollution — and 5 ridiculously easy ways to fix it | Kelsey Johnson

Ever gaze up at the starry night sky? This stunning view is at risk of disappearing — unless we act now, says astrophysicist Kelsey Johnson. In this fascinating, unexpectedly funny talk, she explains how light pollution affects almost every species on earth (including us) and shares five “stupidly simple” things you can do to help solve the problem.

3 ways to be a more effective fundraiser | Kara Logan Berlin

How do you raise money to get an idea off the ground, support a community, help change the world? Take a crash course on the secret art of successful fundraising with development strategist Kara Logan Berlin as she shows how you can learn to ask for the resources you need — and get them, too.

NASA Television to Air Space Station Cargo Ship Launch, Docking

NASA Television will provide live coverage of the launch and docking of a Russian cargo spacecraft delivering almost three tons of food, fuel and supplies to the International Space Station beginning at 4:15 a.m. EST Friday, Dec. 6.

How I use art to tackle plastic pollution in our oceans | Alejandro Durán

Alejandro Durán uses art to spotlight the ongoing destruction of our oceans’ ecosystems. In this breathtaking talk, he shows how he meticulously organizes and reuses plastic waste from around the world that washes up on shores — everything from water bottles to prosthetic legs — to create vivid, environmental artworks that may leave you mesmerized and shocked.

How I'm using biological data to tell better stories — and spark social change | Heidi Boisvert

What kinds of stories move us to act? To answer this question, creative technologist Heidi Boisvert is measuring how people’s brains and bodies unconsciously respond to different media. She shows how she’s using this data to determine the specific narrative ingredients that inspire empathy and justice — and spark large-scale social change.