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They are largely unpredictable and unforeseeable but are twisters becoming a more serious threat?
BBC News Science & Environment
Video 1 minute 31 seconds
Are tornadoes in the US getting worse?
They are largely unpredictable and unforeseeable but are twisters becoming a more serious threat?
Top Stories
Video 1 minute 31 seconds
Are tornadoes in the US getting worse?
They are largely unpredictable and unforeseeable but are twisters becoming a more serious threat?
Peas that don't taste like peas could help planet
UK researchers are developing peas that don't taste like peas as an environmentally friendly alternative to soya.
Fears for environmentalists jailed in Iran
A former prisoner held for years in the same jail as the group tells the BBC of their plight.
Using pig fat as green jet fuel 'will hurt planet'
Animal by-products being used for aviation fuel could increase demand for palm oil, experts fear.
Icy moon of Saturn spews massive water plume
Enceladus, a small moon of Saturn, throws a geyser of water 9,000km (6,000 miles) into space.
Man prises croc's jaws off head at Australian resort
The 51-year-old has a narrow escape from the animal while snorkelling off a luxury island.
Precious cheetah cubs die in Indian national park
The cubs were the first to be born in the country 70 years after the animals were declared extinct here
Featured Contents
Video 1 minute 31 seconds
Are tornadoes in the US getting worse?
They are largely unpredictable and unforeseeable but are twisters becoming a more serious threat?
Peas that don't taste like peas could help planet
UK researchers are developing peas that don't taste like peas as an environmentally friendly alternative to soya.
Fears for environmentalists jailed in Iran
A former prisoner held for years in the same jail as the group tells the BBC of their plight.
Using pig fat as green jet fuel 'will hurt planet'
Animal by-products being used for aviation fuel could increase demand for palm oil, experts fear.
Icy moon of Saturn spews massive water plume
Enceladus, a small moon of Saturn, throws a geyser of water 9,000km (6,000 miles) into space.
Man prises croc's jaws off head at Australian resort
The 51-year-old has a narrow escape from the animal while snorkelling off a luxury island.
Precious cheetah cubs die in Indian national park
The cubs were the first to be born in the country 70 years after the animals were declared extinct here
Peas that don't taste like peas could help planet
UK researchers are developing peas that don't taste like peas as an environmentally friendly alternative to soya.
Fears for environmentalists jailed in Iran
A former prisoner held for years in the same jail as the group tells the BBC of their plight.
Using pig fat as green jet fuel 'will hurt planet'
Animal by-products being used for aviation fuel could increase demand for palm oil, experts fear.
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Video caption: Are tornadoes in the US getting worse? By Felicity Evans
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Video caption: A potential UFO was actually a Bart Simpson balloon Scott Kelly, a former astronaut and pilot, discusses the moment he mistook an inflated cartoon character for a UFO.
