Saturday, 24 June 2017
News with tag Scientists  RSS
Donald Trump appointee once called Obama a ‘Kenyan creampuff’ and Facebook boss a ‘self-hating Jew’

Added: 24.06.2017 10:56 | 0 views | 0 comments


A senior US Energy Department official appointed by the Trump administration once described Barack Obama as a “Kenyan creampuff”, Mark Zuckerberg as an “arrogant, self-hating Jew” and climate scientists as “cultists” and “nuts”, according to a report. William C Bradford, director of the Department’s Office of Indian Energy, also appeared to believe Mr Obama might refuse to step down after his two terms of office, asking “what will we do?

NASA's Curiosity rover has a pet rock on Mars

Added: 23.06.2017 21:57 | 0 views | 0 comments


Mars is probably a pretty lonely place.  The red planet is littered with rusty red rocks and, as far as we know, devoid of any kind of life. But even so, rovers still roam the surface of the world on humanity's behalf, making their solitary treks along previously unexplored paths.  And sometimes, they make friends.  SEE ALSO: NASA photo captures the loneliness of the Mars Curiosity rover NASA's Curiosity rover — which has been exploring the red planet's Gale Crater since 2012 — appears to have a little pet rock caught in one of its wheels.  The rock got stuck in the right front wheel at some point in the last couple weeks, but scientists aren't exactly sure when it started hitching a ride because the rover doesn't snap photos of its wheels every day. Sol 1729 and 1730 MAHLI images of the hitchhiker rock pic.twitter.com/m5SEYXyrep — Lars (@LarsTheWanderer) June 19, 2017 This isn't the first time a rock has gotten caught in Curiosity's shoe, according to Emily Lakdawalla, a planetary scientist writing a book about the rover. Lakdawalla said that NASA and other interested folks back on Earth keep an eye on Curiosity's wheels and the rocks that might pop up in them as it roams the Martian surface. Scientists also spotted another rock, which appeared in that same right front wheel starting in January and disappearing by April, according to Ashwin Vasavada, a Curiosity project scientist.  The current pet rock was seen in photos taken on Sol (Mars day) 1729 and 1730, which translates to June 17 and June 18 on Earth.  "We don’t exactly know how the rocks get in the wheels, but it’s likely that they can hop in as the wheels (and heavy rover) break rocks and sink into the soil around loose rocks," Vasavada said via email. As for the rock's effect on Curiosity's wheels, it seems to be pretty benign.  MARS FACT: All rocks on Mars are freeloading stowaways. pic.twitter.com/m8nSdVUXE4 — SarcasticRover (@SarcasticRover) June 20, 2017 The rocks are small and relatively soft, Vasavada said, so they shouldn't pose too much of an issue to the long-running rover's movements. However, it's always possible that something unexpected could happen.  "There are some bad scenarios, such as when a rock gets jammed and makes a larger hole in a wheel, or if a rock interferes with some cables that run to the wheel motors," Vasavada said. "But we don’t think those are credible problems with these small rocks." Scientists have Curiosity take these photos of its wheels to keep an eye on any holes that have developed in the rover's machinery.  The holes in Curiosity's wheels are a sign of the wear and tear the rover has taken on during its years of work on the red planet, but for the moment, the worn wheels are still functioning well.  And hey, at least Curiosity has a friend. WATCH:

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Decades after the discovery of anti-obesity hormone, scant evidence that leptin keeps lean people lean, scientists say

Added: 23.06.2017 18:51 | 0 views | 0 comments

Decades after the discovery of anti-obesity hormone, scant evidence that leptin keeps lean people lean, scientists caution.

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Child safety or parental duty: New study maps out core concepts in the vaccination debate

Added: 23.06.2017 18:51 | 0 views | 0 comments

The recent measles outbreak in Minnesota has been a sobering reminder of how highly concentrated populations of vaccination skeptics can elevate an entire community's risk of infection. Around the edges of every headline-grabbing outbreak, there's a vast range of opinions being circulated about the risks and benefits of early childhood immunization. The vaccination debate maintains a constant presence on social media platforms. These varied viewpoints caught the attention of scientists who are conducting a three-year study on the ways online interactions influence our beliefs.

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How a single chemical bond balances cells between life and death

Added: 23.06.2017 18:51 | 0 views | 0 comments

With SLAC's X-ray laser and synchrotron, scientists measured exactly how much energy goes into keeping a crucial chemical bond from triggering a cell's death spiral.

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Single electron's tiny leap sets off 'molecular sunscreen' response

Added: 23.06.2017 18:51 | 0 views | 0 comments

Scientists have seen the first step of a process that protects a DNA building block called thymine from sun damage: When it's hit with ultraviolet light, a single electron jumps into a slightly higher orbit around the nucleus of a single oxygen atom.

Tags: EU, Scientists, DNA
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How a single chemical bond balances cells between life and death

Added: 23.06.2017 18:01 | 1 views | 0 comments

With SLAC's X-ray laser and synchrotron, scientists measured exactly how much energy goes into keeping a crucial chemical bond from triggering a cell's death spiral.

From: feeds.sciencedaily.com

Scientists demonstrate adaptation of animal vision in extreme environments

Added: 23.06.2017 18:01 | 0 views | 0 comments

Animals can adapt their ability to see even with extreme changes in temperature, researchers have discovered. The researchers looked deeply into the eyes of catfish living in cold-water streams at altitudes of up to nearly 3 km in the Andes Mountains, and found the protein known as rhodopsin that enables vision in dim light also accelerates the speed at which vision occurs as temperatures drop.

From: feeds.sciencedaily.com

Watched chimps change their hunting habits

Added: 23.06.2017 17:53 | 0 views | 0 comments

Wild chimpanzees have changed their hunting strategies in response to being watched and followed by scientists, observations suggest.

From: www.bbc.co.uk

Scientists recreate Californian Indian water bottles to study ancient exposure to chemicals

Added: 23.06.2017 16:05 | 1 views | 0 comments

Water bottles replicated in the traditional method used by Native Californian Indians reveal that the manufacturing process may have been detrimental to the health of these people.

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