These are photos of Earth's atmosphere taken from space. Here you can see the Northern Lights, lightning flashes and the lights of cities.

Terrestrial volcanoes appear to have contributed to the rise of oxygen in Earth's atmosphere more than 2 billion years ago. The atmospheric shift, which allowed life to flourish, had long been attributed to ancient bacteria. The change in Earth's atmosphere occurred about 2.5 billion years ago. And the bacteria theory has long been problematic, because fossilized cyanobacteria first appeared 200 million years earlier. Scientists wondered why they took so long to fill the atmosphere with oxygen. The answer appears to be that underwater volcanoes were undoing their work. To put the story together,

According to researchers, the number of tropical storms developing annually in the Atlantic Ocean more than doubled over the past century, with the increase taking place in two jumps.The increases coincided with rising sea surface temperature, largely the byproduct of human-induced climate warming.An official at the National Hurricane Center called the research "sloppy science" and said technological improvements in observing storms accounted for the increase.Hurricanes derive their energy from warm ocean water. North Atlantic surface temperature increased about 1.3 degrees Fahrenheit during