Science & Environment
Great Walls 'could stop tornadoes'
Building gigantic walls across the US could protect Tornado Alley "forever", a physicist says, though critics say the idea is unworkable.
Tree storm damage 'worst since 1987'
This winter's extreme winds caused the biggest loss of trees in in more than 20 years, according to the National Trust.
Careless farming 'adding to floods'
The UK government is discussing new rules to stop farmers contributing to flooding through poor land management.
Teenage elephant mums 'are fitter'
Elephants that give birth as teenagers die younger, but are fitter than mothers that delay, scientists say.
Malaria 'spreading to new altitudes'
Warmer temperatures are causing malaria to spread in the African and South American highlands, traditionally havens from the disease, scientists say.
'Carbon bubble' threatens markets
The world's financial markets could be creating a "carbon bubble" by overvaluing the fossil fuel assets of large companies.
Great white shark's epic ocean trek
A great white is about to make history as the first of its species to be seen crossing from one side of the Atlantic to the other.
Immune upgrade gives 'HIV shielding'
Doctors have upgraded the immune system of 12 patients with HIV to help shield it from the virus's onslaught.
Clue to earthquake lightning mystery
Mysterious lightning flashes that appear to precede earthquakes could be sparked by movements in the ground below, scientists say.
Nuclear submarine to get new core
HMS Vanguard is to be refuelled at a cost of £120m after low levels of radioactivity were discovered in the cooling waters of a submarine test reactor.
Satellites track turtle 'lost years'
Scientists using satellite tracking finally have some data on where very young loggerhead turtles go once they leave Florida and the Gulf of Mexico.
From BBC Science and Environment
Features & Analysis
Sense and sensitivity
Are climate “sceptics” ready to accept more of the science?
After the flood
Protecting Somerset Levels to cost tens of millions
Out of sight
Could UK emulate France's approach to nuclear waste disposal?
'Smelling of fish'
Life as a penguin keeper in New Zealand
How wearable robots are becoming a reality