UK climate unit's e-mails hacked - The e-mail system of one of the world's leading climate research units has been breached by hackers.
Mammoth dung clue to extinction - A study of mammoth dung is helping unravel the mystery of what caused the great mammals to die out.
New skin 'may help burns victims' - French researchers say they have found a way of using human embryonic stem cells to create new skin which could help serious burns victims.
First test for record solar plane - The prototype of a solar-powered plane destined for a record round-the-world journey makes its first trip across a runway.
Spacewalk for shuttle astronauts - Two astronauts from the space shuttle Atlantis have embarked on the first spacewalk of their mission.
Skate may be fished to extinction - A species of skate could become the first marine fish driven to extinction by commercial fishing, say scientists.
If you're not going to be gone long, then just carry a small flashlight (torch) that's not too heavy and doesn't occupy a lot of space in your pack. Halogen bulbs are known to be extra bright.