SCIENCE

Lack of Arctic sea ice forces thousands of walrus ashore on Alaska's northwest coast.

Wave of jellyfish clog pipes bringing water into the Oskarshamn nuclear plant.

Xiao Feng has operation to remove the foetus of his undeveloped twin.

In vitro fertilisation helps treat women with primary ovarian insufficiency.

Slice of brain tissue can be multiplied and reimplanted into patient to help fight neurological disease, scientists claim.

Nasa's Earth Observing-1 satellite captures images of island formed in Arabian Sea after Pakistan earthquake.

Damage from 1257 volcanic eruption spread to both Arctic and Antarctic.

Skeleton analysis shows settlers ate rats, chicken and vegetables.

Cancer specialists say they are close to curing skin cancer with a treatment that could work on other cancers, too.

Royal Society scientists say mankind has 'conducted dangerous experiment' with Earth.

Experts from across the globe agree it is 'extremely likely' climate change caused by humanity.

Martian soil analysed by Curiosity rover shows it contains water.

'Groundbreaking' device responds to signals from brain.

Pilots' Association claims new working regulations will increase risk to passengers

Huge pyramid found in waters beneath Sao Miguel and Terceira.

Plastic surgeons create replacement nose on 22-year-old car accident victim's head ready for grafting.

A 419-million-year old fish, found in China, possess jaw bones similar to those of bony fishes and other back boned creatures including humans.

Researchers say flesh in mammoth appendage looks like animal has just been killed.

Image shows golden eagle capturing a young sika deer.

Fear memory reduced in people for first time through exposure therapy during sleep.

Imperial College London scientists close in on universal vaccine that could save 500,000 lives a year and beat H7N9 bird flu.

Researchers believe lunar satellite 4.4 billion years old rather than 4.5 billion.

Bottled water sales soar in community near New Orleans over concerns about Naegleria fowleri amoeba.

Oxford and Durham university scientists say chain of events 520m years ago led to huge and rapid expansion of species.

Don't panic! Astrobiologists say Earth will be habitable for at least another 1.75bn years.

Widespread use of pesticides at banana plantations harming crocodilians in Costa Rica.

Two-and-a-half-year-old had BMI of 44.1 before bariatric surgery.

Scientists debunk common theory of how the universe formed with idea of 'bulk universe' with four dimensions.

European Southern Observatory captures stars forming 6,000 light years from Earth.