PBS
Pbs Learning Media: Inexpensive Inventions and the World's Poor: Earth Sky
Environmental scientist Ashok Gadgil is perhaps best known for his inventions which include an ultraviolet water purifier that can provide clean, cheap water for a thousand people per day and an inexpensive, ultra-efficient cooking stove...
PBS
Pbs Learning Media: Warnings of Global Health Impacts of Climate Change
This Utah Education Network podcast features Dr. Roberto Bertollini of the World Health Organization. He discusses the health impacts of climate change, and its disproportionate effect on citizens of developing countries.
Science Friday Initiative
Science Friday: Colliding Planets (Don't Panic)
New research finds a small -- but present -- chance of a collision between Earth and one of its planetary neighbors in the next few billion years.
Science Friday Initiative
Science Friday: Blue Marble: The Making Of
Hear how the famous "blue marble" pictures of Earth are actually built from datasets collected by instruments aboard satellites and then translated into imagery here on the ground.
Science Friday Initiative
Science Friday: An Astronaut Explores Nasa's Scientific Frontiers
Learn how astronaut and astrophysicist John Grunsfeld leads NASA's investigations of Earth and beyond. This astronaut flown the space shuttle five times, and performed eight spacewalks to service the Hubble telescope. [23:32]
Science Friday Initiative
Science Friday: Studying Rocks Found on Earth for Clues About Space
We'll take a tour of the Center for Meteorite Studies, and learn how meteorites can teach us about the history of the solar system.
Science Friday Initiative
Science Friday: Living It Up in Space
Two NASA astronauts aboard the International Space Station talk about life and the view from 220 miles above Earth.
Science Friday Initiative
Science Friday: Space Debris
Last week, two satellites collided in orbit around Earth. We'll check in on the after-effects of that collision, and talk about what the lingering debris from the crash means for future space missions.
Science Friday Initiative
Science Friday: Tracking a Space Rock's Streak Past Earth
Asteroid 2012 DA14 spans half a football field, and will whiz by the Earth a mere 17,000 miles above us--closer than many satellites.
Science Friday Initiative
Science Friday: Did Life Start in Mica?
A biophysicist discusses her hypothesis that in the early days of Earth, organic compounds needed for life may have been synthesized in the tiny spaces between sheets of mica rock.