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Posts by
Editors of EarthSky
Why don’t tree branches grow straight up?
Tree branches provide a way for tree leaves to act as a net for sunlight.
January 21, 2010
Coal and oil: How do they form?
Explore how temperature and lots of time - at least several million years - are the key variables in the formation of coal and oil.
January 17, 2010
Cats: How long have lived with humans?
Cats and people are depicted together in Egyptian art from nearly 4,000 years ago - but the human-cat relationship may go much farther back.
January 12, 2010
Neil deGrasse Tyson selected as EarthSky Science Communicator of the Year for 2009
EarthSky asked its 600+ Global Science Advisors vote on which scientists had best communicated with the public during 2009. Neil deGrasse Tyson's won.
January 11, 2010
Howard Herzog explains what clean coal means
Some people say there's no such thing. EarthSky asked research engineer Howard Herzog at the MIT Energy Initiative what 'clean coal' means.
December 21, 2009
Antarctic mission’s first season: Making sense of it all
It is bittersweet to reach the end of a season in Antarctic. It is good to be going home, the data that we have collected shows me there is a sobering trend.
December 17, 2009
Why do I get dizzy when I stand up?
Why do you get dizzy? If you've been sitting awhile, blood could pool in your legs, so there's less blood being pumped to your brain.
December 12, 2009
Benjamin Glasser on making liquid fuel from coal
Listen to chemical engineer Benjamin Glasser talk about an innovative, cleaner process that could convert coal to liquid gasoline without producing as much carbon dioxide.
November 30, 2009
Balloons: How high can they fly?
Helium balloons rise higher than hot air balloons. The current altitude record for a helium balloon was set by Malcolm Ross, who flew to over 113,000 feet.
November 28, 2009
What causes the colors in flames?
When you gaze at a wood fire, you might notice different colors in flames. What causes them? It's like the colors of stars indicate their temperatures.
November 28, 2009
