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By Jason Bittel
In the late 1990s, scientists discovered that elephants had a secret way of communicating, a vocalization so low in frequency it is imperceptible to the human ear. It's called infrasound. The ponderous pachyderms transmit these secret messages at least partly through the ground. When an elephant really lets loose, its infrasound can reverberate almost four miles through the rocks and sands of the savanna.
Climate Is a 'Threat Multiplier' But Not Primary Cause of East African Conflict and Displacement, Study Finds
While there are predictions that climate change will displace masses of people in the near future—an Environmental Justice Foundation study reported on by The Guardian put the number in the tens of millions within the next decade—some have indicated that the climate refugee crisis has already begun.