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Lost and broken teeth could one day be regrown, scientists believe after finding the stem cells responsible for tooth formation and the gene that switches it on.

Scientists at the University of Plymouth discovered a new group of stem cells which form skeletal tissue and contribute to the making dentin — the hard tissue that surrounds the main body of the tooth. They also showed that a gene called Dlk1 sparks the stem cells into action, so they can mend damage such as decay, crumbling or cracked teeth.

Currently there is nothing to be done to repair damaged teeth apart from fillings or crowns.

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Dark matter might well be the biggest mystery in the Universe. We know there’s something out there making things move faster than they should. But we don’t know what it is, and we sure as heck don’t know where it came from.

According to a new paper, the origins of dark matter may be more peculiar than we know. Perhaps, they were particles that appeared in a very brief period of time, just fractions of fractions of a second, before the Big Bang.

This doesn’t just suggest a new connection between particle physics and astronomy; if this hypothesis holds, it could indicate a new way to search for the mysterious stuff.

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In the cold waters off the west coast of Vancouver Island, scientists have found a hidden oasis teeming with corals, sponges, and creatures more typical of warmer waters to the south.

The discovery is among the most significant finds from a two-week trip conducted by researchers with the Department of Fisheries and Oceans, the Nuu-chah-nulth Nations and other partner organizations. The expedition dropped a camera on a cable down about 2,000 metres into the depths as part of an examination of Explorer Seamount, Canada’s largest underwater volcano.

“We found a coral garden that is like something you would see in the tropics, with a large coral community home to fish and octopus like everything you would expect to see in Hawaii, but you find it here in Canada deep below the surface where the sun doesn’t reach,” said Dr. Cherisse Du Preez, marine biologist at Fisheries and Oceans Canada.

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Of the 1,500 active volcanoes worldwide, about 6 percent of them erupt each year, or 50 to 85. Less than half of all volcanoes have sensors, and even fewer are considered well-monitored, the result of high costs and difficulty in maintaining equipment in such unforgiving environments. Volcanoes that are considered dormant rarely have any monitoring, despite surprises like the 2008 eruption of the Chaitén volcano in Chile after 8,000 years of inactivity.

Now, volcanologists are turning to satellite imagery and artificial intelligence to keep a closer eye on more volcanoes and, eventually, forecast eruptions. MOUNTS (Monitoring Unrest from Space), currently tracks 18 volcanoes, including Mount Fuego in Guatemala and Mount Etna in Italy.

With 800 million people living within 62 miles of an active volcano, there are plenty of reasons to increase monitoring.

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’s two astronauts will one day fly to the International Space Station (ISS) onboard a SpaceX Crew Dragon capsule. The SpaceX spacecraft is a modified version of the Cargo Dragon capsule, the rocket manufacturer uses to deliver supplies to the ISS. Developed for NASA’s Commercial Crew Programme, part of SpaceX’s launch package includes sleek and futuristic spacesuits. But before NASA’s astronauts can take the Dragon into space, the two men had to go through a dress rehearsal of launch day operations.

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When it comes to detecting whether an image or video is fake, it’s the little mistakes that matter, and to help with the sleuthing, the Defense Advanced Research Projects Agency wants to improve what it calls “semantic forensics.”

The agency announced this week that it plans to hold a proposers day on Aug. 28 to give more information on an anticipated Semantic Forensics (SemaFor) Broad Agency Announcement. It’s the latest expression of DARPA’s interest in countering the chaos-inducing potential of “deepfakes” — the practice of using artificial intelligence to manipulate audio, video, text or photo files.

The SemaFor program, DARPA says, will explore ways to get around some of the weaknesses of current deepfake detection tools. The statistical detection techniques used in the past have been successful to date, but those tools won’t always have the upper hand.

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With exclusive access, this eye-opening series reveals the latest military innovations which are shaping the present and future of the armed forces. Each informative episode features must-see inventions and life-saving gadgets.

This episode shows how simulations are giving RAF pilots the winning edge, how the revolutionary X-Plane blends fixed wing and helicopter technology and how 3D printing is becoming a world-changing industry.

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No glasses needed! 🤓After a visit from our rover ‘optometrist’, #Mars2020 checks out with 20/20 vision. Equipped with several high definition cameras, our new red planet rover will acquire panoramic 3D image data, examine soil for life and more! Check it out:

Equipped with visionary science instruments, the Mars 2020 rover underwent an “eye” exam after several cameras were installed on it. The rover contains an armada of imaging capabilities, from wide-angle landscape cameras to narrow-angle high-resolution zoom lens cameras.

Photo of close-up of the head of Mars 2020's remote sensing mast.

This image, taken in the Spacecraft Assembly Facility’s High Bay 1 at the Jet Propulsion Laboratory in Pasadena, California, on July 23, 2019, shows a close-up of the head of Mars 2020’s remote sensing mast. The mast head contains the SuperCam instrument (its lens is in the large circular opening). In the gray boxes beneath mast head are the two Mastcam-Z imagers. On the exterior sides of those imagers are the rover’s two navigation cameras.

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July 20, 2019 marked the 50th anniversary of the Apollo 11 moon landing. Navy Veteran Neil Armstrong, and Air Force Veterans Buzz Aldrin and Michael Collins manned the mission.

The National Air and Space Museum displayed full-motion projection-mapping artwork on the Washington Monument. The 17 minute long show, “Apollo 50: Go for the Moon”, included a true-to-scale 363 foot Saturn V lift off, various stages of the rocket separation, the lunar landing, the first step on the moon, re-entry, and splash down back to earth.

To read more about the Apollo 11 crew, visit https://www.blogs.va.gov/VAntage/63407/veteranoftheday-apollo-11-crew/

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