Atlantic Ocean currents may be on the verge of collapse, which could plunge Europe into a deep freeze, a new study shows

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greenland ice sheet
The Greenland Ice Sheet could cause Atlantic Ocean currents to shut down.

Reuters/Lucas Jackson

What to do if orcas attack your boat: If you see a killer whale, 'never enter the water' and turn off your engine

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People in a boat watching an orca whale swim toward them.
Orcas are curious animals that may approach your boat.

Portland Press Herald / Contributor / Getty Images

The Atlantic Ocean is getting wider every year. Researchers have finally figured out why.

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midatlantic skitched 1
A map of the Atlantic Ocean floor.

NASA Earth Observatory map by Joshua Stevens, using data from Sandwell, D. et al. (2014).

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