List of All Articles with Tag 'h'

More than 400,000 people were arrested for breaking some of the world's toughest lockdown restrictions.

His speech, delivered in French and English, touched on climate change and the invasion of Ukraine.

US cities have been grappling with large numbers of Venezuelans fleeing economic and political turmoil.

Azerbaijan denies that fighting has resumed a day after ethnic-Armenian forces agreed to surrender.

By David Morgan WASHINGTON U.S. House Speaker Kevin McCarthy will try to restart his stalled Republican spending agenda

Traders are on guard for any sharp move in the yen as it hovers near the 150 level

Ukraine President Volodymyr Zelenksy will return to Capitol Hill Thursday for his second visit since his country was besieged by Russia. Only this time, the political landscape has shifted.

A researcher has figured out that the Earth’s first continent was formed 3bn years ago, in a new paper that sheds fresh light on the early stages of the planet’s life. Jane Greaves, an astronomy professor in the School of Physics and Astronomy at Cardiff University in Wales, was examining continent formation on distant stars and planets. It is thought that exoplanets with continents that formed in a similar way to Earth’s are more likely to be habitable, and perhaps even contain alien life. In the process, she calculated when several distant planets’ continents were born, as well as those a little closer to home. Continents on Earth sit on top of the planet’s hot, viscous mantle. Heat from the inner core stops the mantle from solidifying. The reason the core is hot is because it contains radioactive elements that came from neutron star collisions billions of years ago such as forms of Uranium, Thorium and Potassium. By analysing how many materials like this are present on Earth and on other planets, we are also able to estimate when the continents formed. On Earth, that was about 9.5 billion years since the beginning of the universe. Meanwhile, in Greaves' sample, the first continents appeared 2bn years before Earth’s on the exoplanets of younger, so-called thin disk stars. Older, thick disk stars analysed in her work produced rocky planets with continents that appeared even earlier: about 4 to 5bn years before Earth’s. “The outlook seems very promising for finding rocky exoplanets with continents, given that nearby Sun-like stars have already produced a few candidate hosts,” she wrote. The study, “When were the First Exocontinents?” is published in Research Notes of the American Astronomical SocietySign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

By Maggie Fick LONDON (Reuters) -U.S. drug regulators issued a report detailing quality control lapses at Novo Nordisk's main factory

The couple are on a three-day visit to France, with a state dinner among the highlights of the first day.

The event will explore the megastar's impact on culture and the music industry.

An effervescent young woman with a bubbly laugh and a radiant smile. A stellar student on the cusp of earning her master's degree. A beloved daughter making her mark thousands of miles from home.