For centuries, poets, scholars and theologians have flocked to Chinguetti, a trans-Saharan trading post home to more than a dozen libraries containing thousands of manuscripts.

But it now stands on the brink of oblivion. Shifting sands have long covered the ancient city's 8th-century core and are encroaching on neighborhoods at its current edge. Residents say the desert is their destiny.

Three tropical cyclones are spinning in the South Pacific, an occurrence that scientists say is unusual.

Tropical cyclones Rae, Seru and Alfred are all churning as the region is in the peak of a season that starts in November and ends in April.

An annual United Nations conference on biodiversity that ran out of time last year will resume its work Tuesday in Rome with money at the top of the agenda.

That is, how to spend what's been pledged so far — and how to raise a lot more to help preserve plant and animal life on Earth.

The termination letters that ended the careers of thousands of U.S. Forest Service employees mean fewer people and less resources will be available to help prevent and fight wildfires, raising the specter of even more destructive blazes across the American West, fired workers and officials said.

The Forest Service firings — on the heels of deadly blazes that ripped through Los Angeles last month — are part of a wave of federal worker layoffs, as President Donald Trump's cost-cutting measures reverberate nationwide.

Climate change is accelerating the melting of the world's mountain glaciers, according to a massive new study that found them shrinking more than twice as fast as in the early 2000s.

The world's glaciers lost ice at the rate of about 255 billion tons (231 billion metric tons) annual from 2000 to 2011, but that quickened to about 346 billion tons (314 billion metric tons) annually over about the next decade, according to the study in this week's journal Nature.

The polar vortex hit its peak across much of America on Wednesday, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison. Even Mars has been warmer than North Dakota this week.

But there's hope. Some of the coldest parts of the United States are forecast to see as much as a 90-degree warmup early next week, before the expected return of yet another polar plunge of freezing air the first week in March, meteorologists said.

The European Union's executive on Wednesday heeded the call of activist agricultural organizations and the complaints of hard-right parties by proposing a vision for the future of farming and food production that aims to cut deep into the complicated rules designed to protect the environment.

The blueprint, which seek to better protect local production from what is seen as unfair global competition, come after a year which saw protests by disgruntled farmers using tractors to paralyze many European capitals as part of a campaign lionized by the far right in the runup to their successful showing in EU-wide elections last June.

A wintry gust of wind raises hopes that the giant sails of a centuries-old windmill near Amsterdam will start turning. On the mill's cutting floor, six blades briefly rise and fall, sawing into a rough-hewn plank.

But the wind drops and the mill's sails and saws grind to a halt.

By Paul Bierman, University of Vermont

Since Donald Trump regained the presidency, he has coveted Greenland. Trump has insisted that the U.S. will control the island, currently an autonomous territory of Denmark, and if his overtures are rejected, perhaps seize Greenland by force.

At least nine people have died in the most recent round of harsh weather to pummel the U.S., including eight people in Kentucky who died as creeks swelled from heavy rain and water covered roads.

Kentucky Gov. Andy Beshear said Sunday that hundreds of people stranded by flooding had to be rescued. President Donald Trump approved the state's request for a disaster declaration, authorizing the Federal Emergency Management Agency to coordinate relief efforts throughout the state.