NIF

Nuclear fusion holds huge promise as a source of clean, abundant energy that could power the world. Now, fusion researchers at a national laboratory in the US have achieved something physicists have been working towards for decades, a process known as “ignition”.This step involves getting more energy out from fusion reactions than is put in by a laser.But just how close are we to producing energy from fusion that can power people's homes? While the ignition is only a proof of principle and the first step in a very long…

As astronomers search for life outside our solar system, they have to try and answer one big question: What’s the recipe for a habitable planet? We tend to think about the ingredients we encounter every day: liquid water, the protective blanket of the atmosphere, a sun that is neither too warm nor too hot. But there are other factors that are probably equally important: Earth’s cooled and hardened crust, its gooey molten guts, its magnetic field, its volcanoes and deep sea vents. These are the features that fostered…