A food shortage likely caused by climate change is shrinking a South Antarctic fur seal colony and changing the profile of its surviving members, researchers said Wednesday.

Dogs show jealousy when their owners spend time with what appears to be another dog, suggesting that the emotion may have survivalist roots, U.S. researchers said Wednesday.

Scientists tested 36 dogs and their owners with an experiment in which the owners were told to play with three separate objects in front of their dog.

A robot ship will be launched from Kourou, French Guiana, after a five-day delay on July 29 to deliver provisions to the International Space Station, space transport firm Arianespace said Tuesday.

The new date follows "the completion of complimentary verifications and control measures" of the Ariane 5 ES launcher that will bear the vessel aloft, it said in a statement.

Elephants possess a sense of smell that is likely the strongest ever identified in a single species, according to a study by Japanese scientists out Tuesday.

The African elephant's genome contains the largest number of olfactory receptor (OR) genes -- nearly 2,000 -- said the study in the journal Genome Research.

Astronomers said Tuesday they have examined the remotest parts yet of an elliptical galaxy, Centaurus A, and discovered its starry halo was bigger, more lopsided and richer in heavy elements than expected.

The Hubble Space Telescope, a joint project of NASA and the European Space Agency, scanned the outskirts of the giant galaxy from its position in low Earth orbit, using ultra-sensitive onboard cameras.

Scientists said Tuesday they hope that radar technology will help them find a century-old Aboriginal burial ground on an Australian island, bringing some closure to the local indigenous population.

Peter Davies, from Queensland's University of the Sunshine Coast, is researching the ancient shoreline of World Heritage-listed Fraser Island, popular with tourists for its sandy beaches and dingo, or wild dog, population.

Last month was the hottest June since record-keeping began in 1880, according to a monthly report out Monday by U.S. government climate scientists.

The combined average temperature over land and ocean surfaces was a "record high for the month at 61.20 Fahrenheit (16.22 Celsius)," said the National Oceanic and Atmospheric Administration.

A rare blue-colored red king crab was part of a fisherman's catch earlier this month in Nome, Alaska.

KNOM reports (http://is.gd/NQ1wSP) Frank McFarland found the blue crab in his pot when fishing on July Fourth off Nome. The blue crab is being kept alive at the Norton Sound Seafood Center until McFarland can have it mounted.

The July 24 launch of a robot ship to deliver provisions to the International Space Station has been postponed "for a few days", space transport firm Arianespace said Friday.

Five steps can help stop the decline of bees and other pollinators that are vital for the human food supply, Britain urged in a public appeal on Friday.

Governments worldwide have been alarmed by a steep decline in the numbers of bees, which play a fundamental role in ecosystems, notably in the cultivation of much of the human diet.