Astronomers working for the European Space Agency (ESA) warned yesterday that space is so full of rubbish that it has become a danger to the people and satellites in it.
An unexplained and unprecedented rise in carbon dioxide in the atmosphere two years running has raised fears that the world may be on the brink of runaway global warming. Scientists are baffled why the quantity of the main greenhouse gas has leapt in a two-year period and are concerned that the Earth's natural systems are no longer able to absorb as much as in the past.
North Korea has customised a dozen scrapped Russian submarines to launch ballistic weapons of mass destruction, giving them the capability to strike the US mainland with a nuclear warhead.
Finding life on Mars has proved an elusive dream for decades. But scientists now believe they may be able to do it for themselves - by turning the Red Planet into a blue world with streams, green fields and fresh breezes and filling it with Earthly creatures.
Pakistan might have offered to share military assistance, including "nuclear power" with Nigeria, in defiance of counter-proliferation agreement with the U.S.
A top-secret US defense report warns that climate change could cause major European cities to sink beneath rising seas while nuclear conflict, mega-droughts, famine and widespread rioting erupt across the world.
North Korea could be producing nuclear weapons at the rate of eight to 13 a year in the next year or two, according to a new report from the International Institute of Strategic Studies.
A teenage hacker launched an attack on a chatroom user that brought chaos to America's busiest seaport in what police believe to be the first electronic attack to disable a critical part of a country's infrastructure.
Anti-nuclear protesters argue that NASA plans to use nuclear power propulsion in space increases the risks of radiation contamination both during production and in the event of a launch accident.
US government scientists and Pentagon officials will gather today behind tight security at a Nebraska air force base to discuss the development of a modernised arsenal of small, specialised nuclear weapons which critics believe could mark the dawn of a new era in proliferation.