List of All Articles with Tag 'and'

It’s not often that a single scientific discovery manages to change the way we think about the entire history of humanity. An ancient footprint has been newly uncovered, and it turns out that humans were walking around 30,000 years earlier than we previously thought. Two-legged homo sapiens were living in South Africa, it’s been proven, following the discovery of a 153,000 year old track. It was found in the Garden Route National Park near the coastal town of Knysna on the Cape South Coast. Sign up to our free Indy100 weekly newsletter The footmarks outdate the oldest previous discoveries, with the previous oldest found in nearby areas dated at 124,000 years old. The discoveries were made possible thanks to the optically-stimulated luminescence dating method, which analyses how long it’s been since a grain of sand has been exposed to sunlight. Researchers Charles Helm of Nelson Mandela University and the University of Leicester's Andrew Carr wrote in the Conversation: "In 2023, the situation is very different. It appears that people were not looking hard enough or were not looking in the right places. "Today, the African tally for dated hominin ichnosites (a term that includes both tracks and other traces) older than 50,000 years stands at 14. "Given that relatively few skeletal hominin remains have been found on the Cape coast, the traces left by our human ancestors as they moved about ancient landscapes are a useful way to complement and enhance our understanding of ancient hominins in Africa." The scientists involved believe that the area could be home to many illuminating discoveries given the makeup of the soil. They wrote: "We suspect that further hominin ichnosites are waiting to be discovered on the Cape South Coast and elsewhere on the coast. "The search also needs to be extended to older deposits in the region, ranging in age from 400,000 years to more than 2 million years. "A decade from now, we expect the list of ancient hominin ichnosites to be a lot longer than it is at present – and that scientists will be able to learn a great deal more about our ancient ancestors and the landscapes they occupied." 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.

Ever wondered how water first arrived on our planet? Well, it turns out the mystery could finally have been solved. Researchers have undertaken detailed analysis of asteroids and the findings could change the way the scientific community think about origins of water on our planet. Experts at the University of Arizona's Lunar and Planetary Laboratory (LPL) have discovered salt crystals on samples recovered from space. As their findings state, these crystals could only have formed with the presence of water. Sign up to our free Indy100 weekly newsletter The research was undertaken on samples of the asteroid Itokawa in 2005 by the Japanese Hayabusa mission. It suggests that S-type asteroids could be home to more water than previously thought. The new findings led some scientists to claim that water is likely to have arrived on asteroids when our planet was first being formed. The senior’s author Tom Zega said: "The grains look exactly like what you would see if you took table salt at home and placed it under an electron microscope. "They're these nice, square crystals. It was funny, too, because we had many spirited group meeting conversations about them, because it was just so unreal. Zega added: "It has long been thought that ordinary chondrites are an unlikely source of water on Earth. Our discovery of sodium chloride tells us this asteroid population could harbour much more water than we thought." Itokawa is a S-type asteroid, and it’s thought that temperatures on their surfaces were too high for water to form. Shaofan Che, who is the lead study author, said: "In other words, the water here on Earth had to be delivered from the outer reaches of the solar nebula, where temperatures were much colder and allowed water to exist, most likely in the form of ice. "The most likely scenario is that comets or another type of asteroid known as C-type asteroids, which resided farther out in the solar nebula, migrated inward and delivered their watery cargo by impacting the young Earth." 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.

Brienz was evacuated last month when geologists warned the rockface above it was due to collapse.

A series of reports suggest the migrant boat went down after it was tied to a coastguard vessel.

Man returns George Orwell's dystopian novel to library decades late because of its relevance today.

The Finns Party agree to enter a four-party coalition but will seek drastic cuts to immigration.

When asked by fans if he would expand his tour, Suga said Korean artists 'can't perform in China'.

Dozens more have been injured after the large storm made landfall along the India-Pakistan coastline.

The president says airlines, banks, hotels and concert vendors are playing Americans "for suckers".

The Food Safety Authority of Ireland has directed the withdrawal of frozen foods of an animal nature.

The Department of Homeland Security has removed the chief medical officer at US Customs and Border Protection following the death of an 8-year-old girl held in US custody last month, according to a Homeland Security official.

Experts have explained the reason why every glass of water we consume has dinosaur urine in it and it's not as gross as it sounds. When you get a cold glass of water from the tap, chances are you don’t think much about it before getting it down the hatch, so long as it looks clean. But, water experts have explained that the water you’re drinking may have gone through a dinosaur or even through your neighbour, before getting to you. This is because every drop of water on Earth has gone through a continuous water cycle over billions of years, and the amount of water on the planet at any given time is always the same. Severn Trent Water explained more, telling the Birmingham Mail how our planet's water cycle works. Sign up to our free Indy100 weekly newsletter They explained: “ Heat energy from the sun causes water to evaporate into the atmosphere from sea, lakes and the soil. “Air currents containing water vapour rise over higher ground into cooler temperatures which causes condensation and creates clouds. “More air currents cause the clouds to move around the Earth, across sea and land. As the clouds cool, precipitation as snow, sleet, hail or rain.” They explained that the vast majority of precipitation on Earth ends up back in waterways, such as seas, lakes and rivers. Continuing, they revealed: “97 per cent of the world’s water is salty sea water, two per cent is frozen in the polar ice caps and one per cent is fresh water for us to use.” Water companies collect and store water in reservoirs, which is then treated and tested by the Environment Agency and Drinking Water Inspectorate. It can then be distributed to homes through pipes. Then, the wastewater that has been used is transported through drains and sewers to sewage treatment works and returned to streams and rivers. 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.