Earth secrets

Things we don not know for sure – how it’s happening, how was created, how it is. Questions that people do not know the answer!

Ocean Guilds

The great white shark and the Salmon shark are closely related — each part of what’s called a shark “guild.” Up next — a scientist talks about tracking the movements of shark guilds. Speaking with Randy Kochevar, a scientist with California’s Monterey Bay Aquarium. Kochevar is principle investigator of TOPP — the Tagging of Pacific Pelagics …

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Bioenergy and Photosynthesis-Drawing by Michael Hagelberg

Carbon Below

Carbon dioxide, or CO2, makes up a tiny fraction of Earth’s atmosphere, and yet CO2 can have a big effect on long-term warming of our planet. A scientist talks about how Earth deals with CO2. And in the U.S., even though we have approximately 5% of the world’s population, we give off about a quarter …

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Alaska Glaciers

“Are the glaciers we see here in Alaska remnants of the last ice age — or newer, more recent formations?” The geologists we talked with said that some Alaskan glaciers are very dynamic. For example, the glaciers of southeastern Alaska receive large amounts of snowfall each year. These glaciers give rise to a lot of …

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Predicting El Nino

El Nino is a warming in the Pacific Ocean that can affect weather half a world away. So far, predicting El Ninos has meant looking for subtle changes in sea surface temperatures and wind currents. But these changes signal that an El Nino has already begun. For example, last July, experts at the U.S. National …

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