A new U.S. report blames a combination of problems for a mysterious and dramatic disappearance of honeybees across the country since 2006.

The multiple causes make it harder to do something about what's called colony collapse disorder, experts say. The disorder has caused as much as one-third of the nation's bees to just disappear each winter since 2006.

An innovative solar-powered aircraft is set to launch Friday from California on a flight across the United States, the first of its kind aiming to showcase what is possible without fossil fuels.

The experimental Solar Impulse plane -- with the wingspan of a Boeing 747 but the weight of a small car -- bears 12,000 solar cells.

Demand for farmland may strip the Greater Mekong region of a third of its remaining forest cover over the next two decades without swift government action, a leading conservation group warned Thursday.

Forests are being cleared for commodities such as rubber and rice while illegal logging is decimating many protected zones, WWF said in a report, adding a contentious dam on Mekong river will deepen already severe ecosystem damage.

Scientists revealed Wednesday that they have found the first solid archaeological evidence that some of the earliest American colonists at Jamestown, Virginia, survived harsh conditions by turning to cannibalism.

For years, there have been tales of people in the first permanent English settlement in America eating dogs, cats, rats, mice, snakes and shoe leather to stave off starvation. There were also written accounts of settlers eating their own dead, but archaeologists had been skeptical of those stories.

Scientists revealed Wednesday that they have found the first solid archaeological evidence that some of the earliest American colonists at Jamestown, Virginia, survived harsh conditions by turning to cannibalism.

For years, there have been tales of people in the first permanent English settlement in America eating dogs, cats, rats, mice, snakes and shoe leather to stave off starvation. There were also written accounts of settlers eating their own dead, but archaeologists had been skeptical of those stories.

Hong Kong customs officers have seized 113 ivory tusks worth nearly $400,000 on the Chinese ivory market, officials said on Wednesday.

The smuggled ivory was seized at the airport on Tuesday in a container marked "spare parts" from Burundi which was bound for Singapore, said an official statement.

NASA said Tuesday it will pay $424 million more to Russia for giving U.S. astronauts a lift to the International Space Station.

The hefty bill includes the training and transporting of six astronauts to and from the ISS in 2016 and the first half of 2017 in Russian Soyuz spacecraft.

The team made nanosheets of boron nitride, also called white graphene, that were able to soak up a wide range of spilt oils, chemical solvents and dyes such as those discharged by the textile, paper and tannery industries.

Highly porous, the sheets have a high surface area, can float on water and are water-repellent, the team from France and Australia wrote in the journal Nature Communications.

Physicists announced a breakthrough Tuesday in their quest to answer one of science's great questions: do the same laws of gravity apply to antimatter -- the obscure counterpart of matter as we know it?

Though antimatter is thought to have existed in equal quantities to matter at the moment of the Big Bang some 14 billion years ago, it is rare today and scientists who wish to study antimatter particles have to manufacture them.

NASA's Cassini spacecraft has captured stunning views of a monster hurricane at Saturn's North Pole.

The eye of the cyclone is an enormous 1,250 miles (2,010 kilometers) across. That's 20 times larger than the typical eye of a hurricane here on Earth. And it's spinning super-fast. Clouds at the outer edge of the storm are whipping around at 330 mph (531 kph).