New Map Plots North America’s Bounty of Rivers

New Map Plots North America’s Bounty of Rivers

More of North America’s land is covered by rivers than we thought, according to a new map. Scientists came up with a way to use satellite images to estimate the width of rivers and found that previous methods tended to underestimate how wide they are. The discovery could have implications for studies of flood risk as well as climate change impacts.

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How Smart Are Dolphins?

How Smart Are Dolphins?

Dolphins are one of the smartest animal species on Earth. In fact, their encephalization quotient (their brain size compared to the average for their body size) is second only to humans. But exactly how smart are they? Lori Marino details some incredible facts about dolphins.

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The Solar Sunflower: Harnessing the power of 5,000 suns

The Solar Sunflower: Harnessing the power of 5,000 suns

High on a hill was a lonely sunflower. Not a normal sunflower, mind you; that would hardly be very notable. This sunflower is a solar sunflower that combines both photovoltaic solar power and concentrated solar thermal power in one neat, aesthetic package that has a massive total efficiency of around 80 percent. The Solar Sunflower, a Swiss invention developed by Airlight Energy, Dsolar (a subsidiary of Airlight), and IBM Research in Zurich, uses something called HCPVT…

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