 | A rare albino right whale frolics in the water, a mother giraffe nuzzles its baby, and more in our new weekly roundup of animal photos. |
 | As tropical storm Gustav gains strength in the Caribbean, emergency management personnel who learned from Hurricane Katrina three years ago are already preparing for possible landfall.
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 | Vast swathes of "pristine" Amazon rain forest may actually have been sophisticated urban landscapes prior to the arrival of European colonists, anthropologists say. |
 | Dental pulp from a wisdom tooth could be a new source of therapeutic stem cells, sidestepping the ethical concerns of embryonic cells, Japanese researchers claim. |
 | On the eve of Hurricane Katrina's three-year anniversary, Gustav is poised to blossom into a similarly catastrophic storm, prompting communities all along its path to prepare for the worst. |
 | A distant cousin of the famous "bullet cluster" shows the same separation of dark and ordinary matter occurring as its two parent galaxy clusters collide at high speed. |
 | The rare pre-Inca mummy was masked and entombed with a child sacrifice. Found near high-rises in Lima, the tomb is one of the few known unlooted Wari burials.
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 | An "exquisitely carved" statue of Roman leader Marcus Aurelius, with lion-skin boots and a feathery beard, has been discovered in an artifact-rich site in Turkey. |
 | The remote protected area in the western and central Pacific--proposed by U.S. President George W. Bush earlier this week--would be nearly as large as Texas and Alaska combined. |
 | Dwarf galaxies of varying brightness orbiting the Milky Way have a common central mass, says a new study that suggests dark matter can provide the minimum mass required for galaxies to form. |
 | Some bats prevent crossed signals when flying with others by shutting down their natural sonar, new research reports.
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Researchers in the US say they have solved the mystery of why flies are so hard to swat.
Scientists predict that colder temperatures will prevent the plague of cane toads reaching Australian cities.
The area covered by sea ice in the Arctic is now the second smallest on record, scientists reveal.
A new species of wasp which feed on and grow inside maggots is discovered after one hatched on a scientist's desk.
The most sparsely populated county in Wales is Britain's happiest place - but Edinburgh the least happy, say researchers.
A powerful Nasa space telescope has unveiled an image of the sky viewed through "gamma-ray glasses".
Czech power firm CEZ is to build what it says will be Europe's largest onshore wind farm, in a £1.1bn-euro project.
What is thought to be one of the oldest living creatures on the planet thrives thanks to Scottish summer rain.
Canada's PM says all large ships entering the Northwest Passage and other Arctic waters must register with its Coast Guard.
Water scarcity is a leading cause of food shortages and environmental decline - so why is it ignored?
Why reforming the economics of food production and supply would be beneficial for a number of environmental and social ills.
Climate change threat to Lebanon's cedar trees
Rangers tackle the wildlife trade in DRC's gorilla park
Why is more than half our food now wrapped in plastic?
Why the weekend BBQ is likely to be a washout
It is time to re-think what creatures need our help
Gallery of statues depicting Roman rulers is unearthed
Scientists claim gene therapy has the potential to restore hearing in mice, offering hope for humans as well.
Scientists use a numerical model to predict the risk of infection through airborne transmission of foot-and-mouth virus.
Nasa's robotic rover Opportunity is driving out of a giant crater on Mars nearly a year after its dangerous descent.
Laptops taken to the International Space Station were infected with a computer virus, Nasa confirms.
Early stone tools developed by modern humans were no more advanced than ones used by the Neanderthals, research shows.
A soldier's family are frightened out of their home by a spider thought to have been brought from Afghanistan.
John Hutton appears to warn against a windfall tax, saying the "right framework" is needed to attract future energy investment.
Brazil's Supreme Court puts off ruling on the status of an indigenous reserve disputed by Indians and farmers.
A rapid response service will be set up to help trap and kill grey squirrels across southern Scotland.
Britain is to formally present its case to the UN to extend its territorial rights around Ascension Island.