Emperor Penguins shot from the Mario Zuchelli Base, Ross Sea, Antarctica. Penguins at Floe Edge at Terra Nova.

The planet had a rough year in 2016. African elephants and rhinoceroses were ravaged by poachers. A new United Nations report suggested that biodiversity loss, land degradation, and water shortages are worsening. Arctic sea ice dwindled to record lows after several of the warmest years on record.
It’s easy to forget, for example, that the Obama Administration withdrew millions of acres of the Atlantic and Arctic oceans from consideration for future offshore oil and gas exploration. Carbon dioxide emissions are projected to rise less than a quarter of a percent in 2016—the third year in a row of unexpectedly low growth or declines. And after more than two decades of trying, enough nations finally signed 2015’s Paris accord that a global climate pact actually entered into force in November.
President-elect Donald J. Trump has vowed to “cancel” the Paris agreement, and several of his proposed policies threaten to undo many environmental gains. …