NASA's OCO-2 satellite may help answer question of how much carbon oceans and forests can store.
Earth's inner core formed between 1 billion and 1.5 billion years ago, and this freezing heart of the planet powers its protective magnetic field. Continue reading →
The scars left by cataclysms look oddly beautiful from the air.
Earth's magnetic field, which protects the planet from harmful blasts of solar radiation, is much older than thought.
July will arrive a little late this year -- one second late, to be exact -- and we have the moon to blame.
The second known natural quasicrystal was found inside a meteorite that crashed to Earth in Russia.
A company is planning to offer weather forecasts via a system of small satellites that will watch as GPS spacecraft pass through Earth's orbital horizon.
Nitrogen may have arrived on Earth in ancient meteorites after the planet had already formed.
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