Bill Richardson, a veteran Democratic politician and former US ambassador to the United Nations who later spent decades negotiating the release of Americans detained around the world, has died at...

By David Morgan WASHINGTON Republicans in the U.S. House of Representatives on Tuesday will try again to fill

Provides an overview of South Ossetia, including key facts about this breakaway Georgian territory.

High-speed pursuits of migrants and suspected smugglers have become routine in Texas

The U.S. Census Bureau estimates the world's population has topped 8 billion for the first time

Sergio Perez was still in Texas when he declared his return to the Mexico City Grand Prix his most important race weekend of the season

One of the last leaders of Mexico’s anti-gang citizens’ movement has been buried alongside two of his faithful followers

Scientists think they have discovered a previously unknown hidden structure inside the Earth’s core that could change our understanding of our planet. In school, most of us were taught there are four main layers to the Earth’s structure: the crust, the mantle, the outer core and the inner core. What we know about the Earth’s insides has mostly derived from geologists’ knowledge and observations of volcanoes and seismic waves. But now, scientists believe that there may also be a whole extra layer hidden inside the inner core that no one knew about. Earth’s molten inner core is predicted to be around 5,000 degrees Celsius in temperature and scientists have calculated that it takes up around just 1 per cent of the planet’s total volume. The discovery of a potential fifth layer to the planet’s core came a few years ago when scientists used an algorithm to model thousands of scenarios of the inner core to observe the length of time it takes seismic waves to travel through Earth based on data by the International Seismological Centre. Sign up to our new free Indy100 weekly newsletter Scientists were able to analyse how different material properties within the inner core would affect seismic waves differently and found that some scenarios were certainly more likely than others. The algorithm showed how different materials altered the angle of seismic waves, leading them to hypothesise that there was a change of material somewhere in the inner core. Joanne Stephenson, an Australian National University geophysicist, explained: “We found evidence that may indicate a change in the structure of iron, which suggests perhaps two separate cooling events in Earth's history.” She continued: “The details of this big event are still a bit of a mystery, but we've added another piece of the puzzle when it comes to our knowledge of the Earth's inner core.” While their data isn’t conclusive, it does correlate with other similar studies that have looked into the anisotropy of the Earth’s inner core. Stephenson said: “It's very exciting - and might mean we have to re-write the textbooks!” 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.

During the press conference after her October 7 match, Iyo Sky was asked if she would be up for fighting Taylor Swift at WrestleMania 40

Russian authorities say two drones have crashed outside Moscow as they were approaching the warehouses of a local military unit

This accusation comes merely a week after John Amos' daughter, Shannon, made a public plea for $500K, alleging that a 'caregiver' was exploiting him

BRUSSELS Fewer than a third of unaccompanied children succeeded in winning asylum in Greece last year, with the