A Danish zoo says a month-old polar bear cub is being raised by humans after his mother failed to produce enough milk to feed him.

Scandinavian Wildlife Park manager Frank Vigh-Larsen says Siku is doing "really fine." The cub now weighs 7 pounds (3.2 kilograms grams) — against 3 pounds (1.8 kilograms) at birth.

Most Canadians will not wake up to a white Christmas on December 25 for the first time since Canada's weather office began recording snowfalls in 1955, the government agency said Wednesday.

With just days before the Christian holiday, Environment Canada senior climatologist Dave Phillips told AFP he has never seen so little snowpack in Canada's cities.

An iceberg nearly 100 kilometers (60 miles) long was Wednesday preventing tourist ships from reaching Antarctica to mark the centenary of an Australian explorer's epic polar voyage.

Douglas Mawson, among Antarctica's earliest pioneers, led the Australasian Antarctic Expedition between 1911 and 1914 -- an ambitious scientific research trip that laid Australia's territorial claim and presence on the icy continent.

It could well be enough to make the Magi turn in their graves.

Ecologists warned Wednesday that production of frankincense, one of the three gifts the Wise Men gave to the baby Jesus in a key part of the Nativity story celebrated at Christmas, was in dramatic decline.

Scientists studying the mysterious ailment that has killed millions of bats in an epidemic that is spreading its way across North America say they have detected a tiny sliver of hope in their search for a way to end what has become known as white nose syndrome.

For unexplained reasons, scientists across the Northeast have been finding isolated colonies of little brown bats — once the most common bat species in the region and the hardest hit by white nose syndrome — surviving and healthy.

Astronomers on Tuesday said that for the first time they had spotted two Earth-sized worlds orbiting a Sun-like star, in another big advance in the search for so-called exoplanets.

One of the planets is just three percent bigger than Earth and the other is 13 percent smaller, which would make it a bit tinier than Venus, they reported online in the British science journal Nature.

Massive earthquakes are no more likely today than they were a century ago, despite an apparent rise of the devastating temblors in recent years, U.S. researchers said on Monday.

The deadly 9.0 earthquake this year in Japan, an 8.8 quake in Chile last year and the 2004 Sumatra-Andaman earthquake that registered 9.0 on the moment magnitude scale have raised alarm in some science and media circles that such events may be linked.

The likely death of a planned nuclear waste site at Nevada's Yucca Mountain has left federal agencies looking for a possible replacement. A national laboratory working for the U.S. Department of Energy is now eying granite deposits stretching from Georgia to Maine as potential sites, along with big sections of Minnesota and Wisconsin where that rock is prevalent.

Three decades after the 1982 Nuclear Waste Policy Act said the federal government would handle disposal of high-level radioactive waste, the United States still has no agreed-upon solution for where and how to dispose of about 70,000 metric tons of it. About 10 percent is from the military's nuclear weapons programs; most of the rest is piling up at commercial reactor sites around the country.

Nigerian officials said they have launched a broadcast satellite into orbit to replace one that was lost in space.

Project manager Abdulrahman Adejah said Monday on state-run television that NIGCOMSAT-1R launched successfully from a Chinese launch pad.

The National Zoo in Washington announced Monday it had received a $4.5 million donation from a rich U.S. benefactor which will fund a five-year study into preservation of the giant panda.

The money from David Rubenstein, co-founder of the Carlyle Group, a global investment house, will fund conservation and reproduction programs in China, scholarships and training, and refurbishment of panda enclosures in Washington.