With that simple plea, 16-year-old Swede Greta Thunberg has inspired children worldwide to boycott classes under the anxious gaze of adults who don't quite know how to react. Every Friday since August, Greta, as she is known to all, has staked out a spot in front of parliament in Stockholm, demanding that her government step up the fight against climate change. In the last six months, tens of thousands of high school students -- in Sydney, Brussels, Berlin, The Hague, London and other cities -– have followed suit.
The rubber ducky comet's head has spent 4.5 billion years trying to twist away from its neck. And that's caused some stress fractures.Comet 67P/Churyumov-Gerasimenko, which the European Space Agency explored for two years using its Rosetta probe, takes its name from its dual-lobe shape -- which gives it a duck-like head, neck and body. Now, thanks to a new three-dimensional analysis of images from the Rosetta mission, researchers believe the comet is full of fissures, some of them piercing into its neck as deeply as 1,600 feet (500 meters).On Earth, fissures and cracks tend to originate in movements driven by this planet's plate tectonics and hot, molten interior. But Comet 67P is cold and dead inside. Its fissures, the researchers said in a paper published Feb. 18 in the journal Nature Geoscience, seem to be the result of its two lobes torquing and twisting against each other in different directions. [Spectacular Comet Photos (Gallery)]"It's as if the material in each hemisphere is pulling and moving apart, contorting the middle part -- the neck -- and thinning it via the resulting mechanical erosion," co-author Olivier Groussin, an astronomer at Aix-Marseille University in France, said in a statement.null C. Matonti et al (2019) At their inception, the two bodies joined together awkwardly and imperfectly. Its odd structure created neck-breaking forces in the comet's journey through the solar system as it tumbled along for 4.5 billion years on an elliptical orbit between Earth and Jupiter.Interestingly, it seems like this two-lobed structure may be common in our solar system.NASA's New Horizons probe recently snapped images of a Kuiper belt object called (486958) 2014 MU69, which is similar in many respects to Comet 67P, but it orbits much farther away from the sun. (The Kuiper belt is a ring-shaped area in the solar system beyond Neptune's orbit.) That object also revealed a surprising two-lobed structure in its closeup, though the shape of the two lobes was flatter, making it and look more like a pancake than a rubber duck.An image shows Rosetta's comet next to the more distant, flatter object. NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute; right: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0 Read more at: https://phys.org/news/2019-02-rosetta-comet-sculpted-stress.htmljCpUnlike 67P, though, the researchers said (486958) 2014 MU69 didn't reveal any obvious visual signs of stress. So, while this two-lobed structure may be common, it's not yet clear whether objects with this kind of shape always end up with a neck full of stress fractures. * 11 Fascinating Facts About Our Milky Way Galaxy * The 9 Most Brilliant Comets Ever Seen * Spaced Out! 101 Astronomy Photos That Will Blow Your MindOriginally published on Live Science.
Humans have lived alongside England's River Thames for thousands of years, and they've left some interesting things behind in its muddy waters: wooden clubs for bashing in heads, a toilet that fits three butts at once and sometimes, even bits of human skulls.Tomorrow (Feb. 20), the Museum of London will put one such skull fragment on display. According to a statement from the museum, the fractured frontal skull bone belonged to an adult man who lived sometime around 3600 B.C., making this Neolithic skull chunk one of the oldest human specimens ever pulled out of the Thames. [13 Bizarre Things That Washed Up on Beaches]According to the museum, the specimen was initially discovered near the southern shores of the Thames by a "mudlarker" -- a person who digs through the river mud in search of valuables. (Mudlarkers have made scavenging the Thames their business for hundreds of years; in fact, the 500-year-old skeleton of a dead mudlarker wearing thigh-high leather boots was recently exhumed from the river.)Excited -- or perhaps terrified -- by the shattered chunk of human cranium he found by the river, the lucky mudlarker did what any of us would have done: He promptly called the police."Upon reports of a human skull fragment having been found along the Thames foreshore, Detectives from South West CID [criminal investigation department] attended the scene," detective Matt Morse at the London Metropolitan Police said in the statement. "Not knowing how old this fragment was, a full and thorough investigation took place, including further, detailed searches of the foreshore."For better or worse, the police didn't turn up any more bones. Using radiocarbon dating, which measures levels of different versions of radioactive carbon atoms, they at least learned that the fragment wasn't involved in any recent criminal activity -- the skull bone came from a male over the age of 18 who lived roughly 5,600 years ago.Starting tomorrow, you can see the bone for yourself at the Museum of London, where it will sit alongside other Neolithic artifacts carried through time by the mad, muddy River Thames. * In Images: Deformed Skulls and Stone Age Tombs from France * Images: Thousands of Skeletons Buried Under Central London * In Images: Skulls of Roman Gladiators and War CaptivesOriginally published on Live Science.
The electoral commission announced the delay early last Saturday just Nigeria's 84 million registered voters were preparing to head to the polls. Information Minister Lai Mohammed said the Independent Petroleum Marketers Association of Nigeria (IPMAN) had cut the price of petrol at the pumps to 140 naira per liter from 145 naira. Mohammed also told reporters the National Union of Road Transport Workers, which has about 2 million members who operate bus routes nationwide, had agreed to provide discounts to travelers "looking to travel to their respective voting points".
"In the future he could support his father and the girls," said Ghanem, 27, who lives in a village in Sohag, an area with one of Egypt's highest fertility rates. The family depends on her husband's income from a local cafe. As Egypt's population heads towards 100 million, the government is trying to change the minds of people like Ghanem.
According to Morgan Stanley, ownership for the group fell in the December quarter to its lowest level since the second quarter of 2017, with institutions modestly lowering their exposure to Apple, Amazon.com and Facebook, along with Oracle and IBM. Facebook lost 20 percent in the final three months of 2018, its biggest quarterly percentage loss since 2012. Ownership of Apple fell 50 basis points on a quarter-over-quarter basis, dropping to 2.4 percent, “the lowest level of institutional ownership since C2Q17,” Morgan Stanley analysts led by Katy Huberty wrote to clients.
The deserted souvenir shops and cafes on the mountainous road leading to the 2,600-year-old site are the only reminder that this used to be a major tourist destination. Looting has hit Libya's archaeological sites since the overthrow of Muammar Gaddafi in 2011, when the country descended into turmoil with rival administrations competing for control. Cyrene is one of five of UNESCO’s World Heritage sites in the North African country listed for their outstanding value.
Graffiti covers the walls of a Greek amphitheatre in Cyrene, an ancient ruined city in eastern Libya now struggling with neglect, vandals and illegal confiscation of land by locals. The deserted souvenir shops and cafes on the mountainous road leading to the 2,600-year-old site are the only reminder that this used to be a major tourist destination. Looting has hit Libya's archaeological sites since the overthrow of Muammar Gaddafi in 2011, when the country descended into turmoil with rival administrations competing for control.
The U.N. Commission on Human Rights in South Sudan recommended further investigation of evidence that proceeds from South Sudan's oil-based economy had been channeled to government forces and militias linked to reported war crimes. The Commission said the army, national security, military intelligence, rebel forces and affiliated armed groups had committed serious human rights breaches, and it had drawn up a confidential list of suspects including army and opposition commanders, two state governors and a county commissioner. Although South Sudan's main warring parties signed a peace deal in September, widespread violence, especially rape, has continued.
New US research has found that eating nuts may help to reduce the risk of cardiovascular disease for those with type 2 diabetes. Carried out by researchers at Harvard T.H. Chan School of Public Health and Brigham and Women's Hospital, the new large-scale study looked at 16,217 men and women who completed questionnaires about their diet before and after they were diagnosed with type 2 diabetes. The findings, published in Circulation Research, an American Heart Association journal, showed that eating all types of nuts, and even just a small amount, offered some benefit for heart health, although tree nuts did appear to be more beneficial than peanuts.
Kinder Morgan Inc will expand loading capacity at its ethanol terminal in Chicago to address producer concerns that trade at the terminal - a benchmark for global ethanol prices - is vulnerable to manipulation, three people briefed on the company's plans told Reuters. Tens of thousands of barrels change hand at the hub every day, but many more barrels across the country depend on the price. Ethanol trade in the cash market at the Kinder Morgan Argo hub is used in contracts for the biofuel across the country, and is also baked into international contracts.