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General Science / Biology news 1234

New ant species discovered in the Amazon likely represents oldest living lineage of ants

September 15, 2008 | User rating: 4.5 / 5 after 86 vote(s) | User comments: 7

A new species of blind, subterranean, predatory ant discovered in the Amazon rainforest by University of Texas at Austin evolutionary biologist Christian Rabeling is likely a descendant of the very first ants ...


Evidence of evolutionary selection found in 544 genes

September 16, 2008 | User rating: 4.4 / 5 after 45 vote(s) | User comments: 10

(PhysOrg.com) -- By comparing the genomes of humans and five other mammals, Cornell researchers have identified 544 genes that have been shaped by positive selection over millions of years of evolution.


Pterosaurs couldn't soar, says expert

October 01, 2008 | User rating: 3.3 / 5 after 30 vote(s) | User comments: 29

A Japanese researcher has put paleo-biologists in a flap by suggesting pterosaurs -- the winged lizards beloved of toymakers and dino movies -- were unable to fly, New Scientist says.


Whale songs are heard for the first time around New York City waters

September 16, 2008 | User rating: 4.5 / 5 after 14 vote(s) | User comments: 1

For the first time in waters surrounding New York City, the beckoning calls of endangered fin, humpback and North Atlantic right whales have been recorded, according to experts from the Bioacoustics Research Program at the ...


Researchers discover how infectious bacteria can switch species

October 09, 2008 | User rating: 4.8 / 5 after 6 vote(s) | User comments: 1

Scientists from the Universities of Bath and Exeter have developed a rapid new way of checking for toxic genes in disease-causing bacteria which infect insects and humans. Their findings could in the future ...


At 2.8 km down, a 1-of-a-kind microorganism lives all alone

October 09, 2008 | User rating: 4.9 / 5 after 60 vote(s) | User comments: 8

The first ecosystem ever found having only a single biological species has been discovered 2.8 kilometers (1.74 miles) beneath the surface of the earth in the Mponeng gold mine near Johannesburg, South Africa. ...


Deepest living fishes caught on camera for the first time

October 07, 2008 | User rating: 4.7 / 5 after 29 vote(s) | User comments: 2

(PhysOrg.com) -- Scientists filming in one of the world's deepest ocean trenches have found groups of highly sociable snailfish swarming over their bait, nearly five miles (7700 metres) beneath the surface ...


Siren voice means she's fertile

October 08, 2008 | User rating: 4.2 / 5 after 24 vote(s) | User comments: 6

A woman raises the pitch of her voice during her most fertile period of the month in an unconscious boost to her femininity, according to a study published Wednesday in the British journal Biology Letters. ...


Puzzle of ants' suicide mission to protect the nest

September 24, 2008 | User rating: 4.4 / 5 after 23 vote(s) | User comments: 2

(PhysOrg.com) -- Scientists studying social insect behaviour have discovered a remarkable example of self-sacrifice in a species of ant found in Brazil.


Fantastic photographs of fluorescent fish

September 16, 2008 | User rating: 4.2 / 5 after 18 vote(s) | No comments yet

Scientists have discovered that certain fish are capable of glowing red. Research published today in BMC Ecology includes striking images of fish fluorescing vivid red light.


DNA could reveal your surname

October 08, 2008 | User rating: 4 / 5 after 29 vote(s) | User comments: 1

(PhysOrg.com) -- Scientists at the world-leading Department of Genetics at the University of Leicester – where the revolutionary technique of genetic fingerprinting was invented by Professor Sir Alec Jeffreys- are developing ...


Egalitarian revolution in the Pleistocene?

October 03, 2008 | User rating: 4.1 / 5 after 17 vote(s) | User comments: 4

Although anthropologists and evolutionary biologists are still debating this question, a new study, published in the open-access journal PLoS ONE, supports the view that the first egalitarian societies may have appeared ...


Biologists hope to kill all of Rat Island's rats

September 24, 2008 | User rating: 4.3 / 5 after 18 vote(s) | User comments: 4

Just one tiny misstep, one goof, and years of planning a $3 million wildlife project will be worthless. Last week, a crew of 18 left Homer aboard the crabber Reliance, bound for little Rat Island at the end of the Aleutian ...


Landmark study unlocks stem cell, DNA secrets to speed therapies

October 10, 2008 | User rating: 5 / 5 after 19 vote(s) | No comments yet

In a groundbreaking study led by an eminent molecular biologist at Florida State University, researchers have discovered that as embryonic stem cells turn into different cell types, there are dramatic corresponding ...


Hundreds of new marine species discovered: Australian scientists

October 08, 2008 | User rating: 4.6 / 5 after 13 vote(s) | No comments yet

Hundreds of new marine species and previously uncharted undersea mountains and canyons have been discovered in the depths of the Southern Ocean, Australian scientists said Wednesday.


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