paloma cortes

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Why China oh-so-desperately wants a claim to the Arctic Ocean

<i>This post has been updated.</i><p>Every two years, the Arctic Council, the group of eight countries with Arctic territory, convenes to set regional policy. China really wants to be a part of this (paywall), and has twice before been turned down for observer status, which would let it sit in on meetings …

Embryonic stem cells: Advance in medical human cloning

<b>Human cloning has been used to produce early embryos, marking a "significant step" for medicine, say US scientists.</b><p>The cloned embryos were used as a source of stem cells, which can make new heart muscle, bone, brain tissue or any other type of cell in the body.<p>The study, published in the journal …

Genetics

The Cicada’s Love Affair With Prime Numbers

As far back as the seventeen-hundreds, fur trappers for the Hudson’s Bay Company noted that while in some years they would collect an enormous number of Canadian lynx pelts, in the following years hardly any of the wild snow cats could be found—until, some years later, when the trappers found …

Invasive ladybirds wage 'biological war' on natives

<b>German researchers have discovered the biological keys to the success of an invasive species, wreaking havoc across Europe and the US,</b><p>The Asian ladybird was originally brought in to control aphids in greenhouses.<p>But it has escaped and is increasing uncontrollably across Europe, wiping out native …

What Is It About Bees And Hexagons?

Solved! A bee-buzzing, honey-licking 2,000-year-old mystery that begins here, with this beehive. Look at the honeycomb in the photo and ask yourself: (I know you've been wondering this all your life, but have been too shy to ask out loud ... ) Why is every cell in this honeycomb a hexagon?<p>Bees, …

The microbiological minefield

MEDICAL implants, such as stents and catheters, bring a risk of infection. Specifically, their smooth surfaces encourage the growth of bacterial …

Cities: How crowded life is changing us

More than half the world’s population are concentrated in urban areas, and this is having an effect not just culturally, but biologically too. And advances in technology are adding an entirely new dimension to people’s lives.<p>Cities cover just 3% of the planet's land surface, but are already home to …

Simpler solutions for unlocking secrets of ageing minds

Could tiny organisms help us understand the extraordinary complexity of the human brain, and how to keep our brains healthy as we get older? One person thinks so.<p>There’s now a great deal of effort and money devoted to understanding the extraordinary complexity of the human brain. But it’s also …

Venter: ‘We know 1% of what we’ll ultimately know’

Genetics pioneer Craig Venter reveals what we have and haven’t learned from the human genome sequence, and the biggest challenges we face as our population soars.<p>Over a decade after the human genome was sequenced, what has this information delivered? Who better to answer the question than Craig …

Human cloning developments raise hopes for new treatments

Lorraine Barnes suffered a heart attack in 2005 and has lived with the consequences – extreme exhaustion and breathlessness – ever since. "I was …

UK science is falling behind in the global race

When it comes to Olympic sport, the UK is a small nation making a big impact. Last year's games saw us finish third in the medals table, behind only …