Sharks have been making headlines recently after a 2016 report of a Greenland shark that was around 512 years old resurfaced this week. In November, a dinosaur-era frilled shark was on our minds. Here are just a few of the most terrifying examples of sharks from across time.
By Will Boggs MD (Reuters Health) - Brain cells - neurons - develop gene mutations over the course of a lifetime, contributing to normal aging and potentially presenting a target for treatments that stave off dementia and other types of cognitive decline, researchers say. The team developed a way to sequence the genomes of individual neurons, which allowed them to see what changes are normal and also what happens in specific brain diseases. "The work is at a very early stage,â€ť senior study author Dr. Christopher A. Walsh from Harvard Medical School in Boston told Reuters Health by email.
MOSCOW (AP) â€” A senior executive at the Russian nuclear processing plant suspected of being behind a spike of radioactivity over Europe this fall admitted Wednesday that the isotope recorded does emerge as part of the plant's production cycle but said its levels are negligible.
Giant penguins, standing over 5 feet tall and weighing more than 220 pounds, may have roamed Earth some 60 million years ago, according to new research. Scientists on Tuesday said they discovered fossils of an ancient penguin that may have stood 5 foot 7 â€” nearly the height of the average American male â€” and weighed about 225 pounds, according to a Nature Communications research report. It would dwarf the emperor penguin, the biggest penguin today, which is less than 4 feet tall.
In just under four hours Mr. Putin answered scores of questions, some of them quite minute and detailed, about domestic and foreign policy.Â Itâ€™s a familiar format for Russians, who see Putin onstage taking questions twice a year: once in a meet-the-media presser like today, and once in a marathon electronic town hall spectacle in which he interfaces with people around the country. Recommended: Sochi, Soviets, and czars: How much do you know about Russia? Opinion surveys suggest that he will walk to victory in presidential polls slated for MarchÂ â€“Â not much of a cliffhanger, since he faces no serious opponentÂ â€“ and be duly ensconced in the Kremlin for another six-year term.
The scene at the United Nations Security Council last week was reminiscent of the run-up to the US invasion of Iraq in 2003, when the international community balked at President George W. Bushâ€™s â€świth us or against usâ€ť message to the world body concerning the coming war. This time the impetus for the emergency Security Council meeting was President Trumpâ€™s recognition of Jerusalem as the capital of Israel â€“ a move in opposition to decades of US-backed council resolutions on the holy cityâ€™s status â€“ and neither friend nor foe of the United States was having anything to do with it. Recommended: What do you know about Donald Trump?
A series of experiments show the organic molecules necessary to start life on Earth could have been created on a piece of rock plummeting through the freezing vacuum of space. Although we can pinpoint when life on Earth beganâ€”about 3.8 billion years agoâ€”figuring out where it came from is another story. The idea that life, or the building blocks needed to create it, have extraterrestrial origins is popular theory, but it has one major caveat: life has never actually been found to exist anywhere else but Earth.
ForÂ six decades, scientists have been looking for a bunch of electrons hiding near Earth but haven't beenÂ able to find them.Â Those elusive particles have finally been spottedâ€”and by a team composed mainly of college students armed with a satellite the size of a shoebox. â€śWe are reporting the first direct detection of these energetic electrons near the inner edge of Earthâ€™s radiation belt,â€ť lead author Xinlin Li, who studies Earth's space environment at the University of Colorado Boulder. The hidden electrons are the product of a process called cosmic ray albedo neutron decay.
LOS ANGELES (AP) â€” Loss of water from rocks during drought caused California's Sierra Nevada to rise nearly an inch (2.5 centimeters) in height from October 2011 to October 2015, according to a new NASA study made public Wednesday.
Alphabet Inc's Google and NASA said on Thursday that advanced computer analysis identified two new planets around distant stars, including one that is part of the first star system with as many planets as Earth's solar system. The research by Google and the University of Texas at Austin that used data from NASA raised the prospects of new insights into the universe by feeding data into computer programs that can churn through information faster and more in-depth than humanly possibly, a technique known as machine learning.
By Will Dunham WASHINGTON (Reuters) - Ticks, the notorious disease-spreading parasites, have been making life miserable far longer than human beings have walked the Earth. Scientists on Tuesday described a number of ticks, including a previously unknown species that they named after the fictional vampire Dracula, entombed in chunks of amber from Myanmar dating back 99 million years, including one still grasping a feather apparently from a feathered Cretaceous Period dinosaur. One of the ticks belonging to the species Deinocroton draculi, meaning "Dracula's terrible tick," was found so engorged with blood that it increased its size eight-fold.
ALBANY, N.Y. (AP) â€” New York's U.S. Sen. Chuck Schumer says a federal rule change that's stopping donated Christmas trees from being sent to American troops overseas is straight out of the Grinch's playbook.
In March 2018, experimental biologist Itamar Harel will open a research lab at the Hebrew University of Jerusalem to study the killifish, according to news site ISRAEL21c. Harel told Newsweek that it'sÂ the shortest-lived vertebrate that can still be grown in a lab. The killifish's aging process shares a number of similarities to our own.
Astronomers are to scan a huge cigar-shaped interstellar object for signs of alien life, amid claims it could be some kind of artefact. Researchers involved in Seti - the Search for Extra-Terrestrial Intelligence - will turn a powerful dish telescope towards "Oumuamua", which was first spotted in October. It is the first object discovered in the solar system that appears to have come from another part of the galaxy - and is assumed to be an asteroid.