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General Science news 1234

Long lost sisters

8 hours ago | User rating: 4 / 5 after 8 vote(s) | No comments yet

The human race was divided into two separate groups within Africa for as much as half of its existence, says a Tel Aviv University mathematician. Climate change, reduction in populations and harsh conditions may have caused ...


Researcher finds El Nino may have been factor in Magellan's Pacific voyage

8 hours ago | User rating: 4.4 / 5 after 5 vote(s) | No comments yet

A new paper by North Carolina State University archaeologist Dr. Scott Fitzpatrick shows that Ferdinand Magellan’s historic circumnavigation of the globe was likely influenced in large part by unusual weather conditions – ...


MIT crafts bacteria-resistant films

8 hours ago | User rating: not rated yet | No comments yet

Having found that whether bacteria stick to surfaces depends partly on how stiff those surfaces are, MIT engineers have created ultrathin films made of polymers that could be applied to medical devices and other surfaces ...


Simple Model Cell is Key to Understanding Cell Complexity

8 hours ago | User rating: not shown ( 2 vote(s) ) | No comments yet

A team of Penn State researchers has developed a simple artificial cell with which to investigate the organization and function of two of the most basic cell components: the cell membrane and the cytoplasm--the ...


Fuel cells: distant dream, but burning with promise

9 hours ago | User rating: 4.3 / 5 after 6 vote(s) | No comments yet

Some day, fuel cells may power your car and exhaust only water and perhaps carbon dioxide. More efficient and cleaner than an internal combustion engine, their emissions will be much lower. They may also run ...


Women want bargains but men prefer brand names

10 hours ago | User rating: 3.4 / 5 after 5 vote(s) | User comments: 1

Women are better bargain hunters than men, with male shoppers seeking known brand names when deciding which store to go to, a Massey University study of consumers has found.


New study reveals hidden neotropical diversity

11 hours ago | User rating: not shown ( 2 vote(s) ) | No comments yet

Evidence of physically similar species hidden within plant tissues suggest that diversity of neotropical herbivorous insects may not simply be a function of plant architecture, but may also reflect the great age and area ...


Scientists solve gravity-defying bird beak mystery

11 hours ago | User rating: 4.1 / 5 after 8 vote(s) | No comments yet

As Charles Darwin showed nearly 150 years ago, bird beaks are exquisitely adapted to the birds' feeding strategy. A team of MIT mathematicians and engineers has now explained exactly how some shorebirds use their long, thin ...


Small primate ancestors had a leg up

11 hours ago | User rating: 4.2 / 5 after 5 vote(s) | User comments: 1

Smaller primates expend no more energy climbing than they do walking, Duke University researchers have found. This surprising discovery may explain the evolutionary edge that encouraged the tiny ancestors of modern humans, ...


An ancient protein balances gene activity and silences foreign DNA in bacteria

11 hours ago | User rating: not shown ( 3 vote(s) ) | No comments yet

Compared to humans, bacteria have a much tidier genome. The tiny microorganisms pack their genes closely together, and don’t carry around a lot of extraneous DNA, so-called junk DNA that fills in the gaps between genes. Some ...


Larger horns a gamble for young Soay sheep

13 hours ago | User rating: not shown ( 1 vote(s) ) | No comments yet

When it comes to winning mates, larger horns are an asset for male Soay sheep. But those that grow them may be putting their young lives on the line, according to a study published online on May 15th in Current Biology.


Researchers document rapid, dramatic 'reverse evolution' in the threespine stickleback fish

13 hours ago | User rating: 4.6 / 5 after 5 vote(s) | No comments yet

Evolution is supposed to inch forward over eons, but sometimes, at least in the case of a little fish called the threespine stickleback, the process can go in relative warp-speed reverse, according to a study led by researchers ...


Embryonic pathway delivers stem cell traits

13 hours ago | User rating: not shown ( 3 vote(s) ) | No comments yet

Studies of how cancer cells spread have led to a surprising discovery about the creation of cells with adult stem cell characteristics, offering potentially major implications for regenerative medicine and ...


Plant biologists discover unexpected proteins affecting small RNAs

13 hours ago | User rating: not shown ( 2 vote(s) ) | No comments yet

Now that high school biology students can recite that genes are made of DNA, which is transcribed into messenger RNA (mRNA), which is then translated into protein, along comes a new class of molecules, sending students—and ...


Immune cells kill foes by disrupting mitochondria 2 ways

13 hours ago | User rating: not shown ( 2 vote(s) ) | No comments yet

When killer T cells of the immune system encounter virus-infected or cancer cells, they unload a lethal mix of toxic proteins that trigger the target cells to self-destruct. A new study shows T cells can initiate cellular ...


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