Heat may spark world food crisis

Half the world's population could face food crisis by 2100 as soaring temperatures cripple staple crops, scientists warn.

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Animal matters

Scotland's debate over tests on primates

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Venomous mammal caught on camera

Rare footage of one of the world's most strange and elusive mammals is captured by scientists.

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Canadians claim South Pole record

A trio of Canadians claim a new record for the fastest trek across Antarctica to the South Pole.

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Everest trip helps critically ill

Blood oxygen levels recorded on a trip by medics to Everest could help the treatment of critically ill patients.

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Feilden's blog

Ground-breaking new technique in stem cell science

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Tech fair offers greener vision

Analysts at the Consumer Electronics Show say green credentials of tech products will become critical to success.

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Baby Jupiter's huge weight gain

The planet Jupiter must have gained mass fast during its infancy, according to astronomers.

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Eat it or lose it - why centuries of crop diversity are at risk

Centuries of crop diversity are at risk of being lost forever as farmers turn to just a few modern, high yielding varieties.

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'Wolfman' returns

Explorer Jim McNeill tracks down Arctic wolves

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Mosquitoes make sweet love music

Sexy songs sung by mosquitoes in courtship could be key to curbing the spread of dengue fever, say scientists.

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Our writers talk back

Some of the previous contributors to the Green Room respond to readers' questions and comments.

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Holes give edge to new armour

Scientists from the UK Ministry of Defence (MoD) have devised ultra-hard vehicle armour to protect military personnel.

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China alert over bird flu death

Chinese authorities shut down and clean poultry markets in Hebei province, after the first human death in nearly a year.

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Beagle hunter

On a mission to find the most famous ship of science

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A deep-sea fish caught in the Pacific has mirrors for eyes

A deep-sea fish caught in the Pacific has eyes which use mirrors as well as lenses, scientists discover.

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First flight of algae-fuelled jet

Continental Airlines is the latest to test fly a jet biofuel, this time with a product derived partially from algae.

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Poetry or science?

Is romantic love just a chemical cocktail?

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Panda bites his third tourist in two years at Beijing zoo

A panda at Beijing zoo bites a man for the third time in two years.

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Zimbabwe troops 'eat elephants'

A Zimbabwean wildlife campaigner tells the BBC that soldiers are being given elephant meat to eat, as the economic crisis deepens.

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Body repair 'could be ramped up'

A combination of drugs could trick the body into sending its repair mechanisms into overdrive, say scientists.

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Mummy of female pharaoh uncovered

Egyptologists find remains of a mummy thought to belong to a queen who ruled 4,300 years ago, Egypt's antiquities chief announced.

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Earth Watch

Why it is hard to predict sudden environmental crises

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US vows 'huge' marine protection

The US is to establish "the largest area of protected sea in the world", banning fishing and mining, around its Pacific islands.

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Black holes 'preceded galaxies'

Astronomers believe they have solved a cosmic chicken-and-egg question: what came first - black holes or galaxies?

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 Science > Math > Recreations > Specific Numbers > Infinity

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Science > Math > Recreations > Specific Numbers > Infinity

Infinity:

Counting to Infinity

Introduction to infinity including the origins of the sign for infinity and pictures.

http://www.scidiv.bcc.ctc.edu/Math/infinity.html

Graand

Free Classified Ads Portal

www.graand.com

Hector Parr's Essays: Infinity

Includes a look at the concept of infinity and the logical flaws in the different contexts of infinity.

http://www.c-parr.freeserve.co.uk/hcp/infinity.htm

Hotel Infinity

Includes articles on big ideas and concepts, an introduction on background ideas, activities, books to read and a page of resources as well as a vocabulary index.

http://www.c3.lanl.gov/mega-math/workbk/infinity/infinity.html

Infinity

Article about infinity. Talks about protential infinity and actual infinity.

http://pespmc1.vub.ac.be/INFINITY.html

The Infinity

Online home of infinity with newsletter archive from 1996 to the present.

http://www.wooster.edu/math/infinity/

Infinity

Looks at the 3 different contexts and says for each whether infinity exists in each one and why. Links to other essay on the same site on infinity.

http://www.math.toronto.edu/mathnet/answers/infinity.html