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NASA has been looking for ways to limit space debris since 1979.Some space debris can move at 18.

moves very quickly in low Earth orbit.Jasmin Moghbeli and Loral OHara.A bag of tools lost by NASA astronauts during a space walk is now orbiting around Earth.

and the accidental destruction of two American and Russian spacecraft.were replacing parts of the station when the tool bag was inadvertently lost.

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Both increased the debris in this area by about 70% and also increased the chances of other spacecraft collidingAll animals have a thermal range within which they can survive but also a temperature at which they perform best (e.

One of the consequences of a changing climate is that it gets warmer further north.As ocean temperatures have been warming through a series of El Ninos.

meaning that juvenile sharks are more sensitive to colder water.known to scientists as white sharks.