The mesosphere is a layer of the Earth's atmosphere that begins just above the stratosphere and extends 53 miles (85 km) upwards. When meteors burn up, it happens in this layer.
Tundra Turns Traitor: Warming Climate Shifts Carbon Sink To Source
Recent research shows that global warming may convert tundras from carbon sinks into sources, intensifying climate change. The study highlights the need for detailed climate... http://dlvr.it/T9fC2Q
