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NASA vs. cigarettes—a numbers game

People often criticize the amount of money spent on space exploration. Sometimes it's well-meaning friends and family who say that that money is wasted, and would be better spent on solving problems here on Earth. In fact, ...

dateNov 17, 2015 in Space Exploration
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What percent of Earth is water?

The Earth is often compared to a majestic blue marble, especially by those privileged few who have gazed upon it from orbit. This is due to the prevalence of water on the planet's surface. While water itself is not blue, ...

dateDec 02, 2014 in Earth Sciences
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