These insidious waves often seem to come out of nowhere and claim lives -- even on calm, sunny days. But how?
NASA's Mars Reconnaissance Orbiter and its high-powered HiRISE camera has been capturing extremely detailed pictures all over the surface of Mars for a few years now. MRO now reveals a number of surprising, curious, and often captivating landscape features, many of which have inferred the action of dynamic weather processes on Mars.
The record-breaking Australian summer of 2012–13 could not have happened without the human disturbances—greenhouse gases, aerosols and ozone—that underlie global warming. Australia’s experience may provide a clue about the future for dry continental areas like our own American West.