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Page last updated at 21:04 GMT, Monday, 23 November 2009

LHC tunnel (Cern/M.Brice)

First collisions in Cern collider Engineers operating the Large Hadron Collider (LHC) have smashed together proton beams in the machine for the first time. Q&A: Repairing the LHC In pictures: Machine reboots Large Hadron Collider: Guide

Barack Obama US 'will announce climate target'
The US will give a target for reducing greenhouse gas emissions at next month's UN climate summit, officials say.

Bloodhound SSC (Curventa) Design fixed for 1,000mph car
The UK team aiming to smash its own land speed record by driving a car beyond 1,000mph settles on a final design for the vehicle.
FEATURES, VIEWS, ANALYSIS

BBC News Green Room logo Carbon credit
Are children's futures going up in smoke?

Greater one-horned rhino and calf In pictures
Nepal's greater one-horned rhino makes a comeback

Richard Black Earth Watch
Korean model for Obama as Copenhagen looms

THE GREEN ROOM Environmental opinion and debate

EARTH NEWS Reporting life on Earth

Climate protest on Christopher Columbus statue in Barcelona Climate: A question of justice

Giraffe (Giraffa camelopardalis) Giraffes use 'supercharged' heart

From space race to human race

Seahorse 'hitchhikes' Atlantic

MORE STORIES

SCIENCE
Water mission returns first data
Astronaut becomes father in orbit
New skin 'may help burns victims'
First test for record solar plane
Spacewalk for shuttle astronauts

ENVIRONMENT
UK climate unit's e-mails hacked
Mammoth dung clue to extinction
Skate may be fished to extinction
Energy-saving bulbs 'get dimmer'
Corps blamed for Katrina floods

FEATURES, VIEWS, ANALYSIS

Copepod (Bunzow/Corgosinho) In pictures
Rare creatures found in the depths of the ocean

A televisual representation of Homo erectus Palaeo-celebrity
A journey to the Java home of an ancient alpha male

Tree Frog Visions of Darwin
Museum launches contest for photos inspired by Darwin

OTHER TOP STORIES East Antarctica 'is losing ice'
Cern Collider makes fast progress
Dirt 'can be good for children'
Ex-USSR cosmonaut Feoktistov dies
Fish 'at risk' in acidified ocean
ALSO IN THE NEWS

Enceladus (Nasa) Stunning flyby pictures of Saturn's enigmatic moon Enceladus

Japanese macaques (Macaca fuscata) How monkey grandmothers take up the maternal role

THE BIG PICTURE

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VIDEO AND AUDIO NEWS

An octupus New species found in deep sea

Land speed record Design fixed for 1,000mph car

Large Hadron Collider (AFP) Excitement at Large Hadron Collider re-start

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