Unbalanced minerals, contraceptive pills, tech-savvy kids, and more of your questions. This special episode of Skeptics with a K was recorded live at QED 2016!
Articles on Tuesday 30th August in The Times, Telegraph, The Sun, Mirror and Daily Mail reported that “vaping…
Via Sense about Science: http://ift.tt/2cekq3O
Publications and resources
Response to stories suggesting that vaping is as bad for the heart as cigarettes
Professor Peter Hajek, director of the Tobacco Dependence Research Unit at the Wolfson Institute of Preventive Medicine at Queen Mary University London, said:
“The study is reporting on a well-known short-term effect of nicotine – stiffening of arteries – that accompanies all types of stimulation. The same effect is generated by watching a thriller or a football match or sitting an exam. Drinking a cup of coffee actually produces a larger response of much longer duration. The key heart health risks of smoking are not caused by nicotine but by other chemicals in tobacco smoke that are not present in e-cigarette vapour.”
Document type: For The Record
Published: 31 August 2016
Interesting article from the Neurologica Blog on the effects of Caffeine.
Via Multiple Sclerosis News From Medical News Today: http://ift.tt/1nuiFUd
Playing "brain-training" video games may help improve some cognitive abilities of people with multiple sclerosis (MS) by strengthening neural connections in an important part of their brains…
Via Bad Astronomy: http://ift.tt/21bCtcd
Just a reminder that this picture was taken by a one-ton plutonium-powered laser-eyed robotic mobile chemistry laboratory sitting on another planet.
But I can’t leave it there, of course.
First, the self-portrait taken by the Curiosity rover on Mars is a combination of 57 separate photos taken by a camera on the end of the rover’s robot arm. You don’t see the arm because the pictures are cleverly stitched together using only angles where you can’t see it. That gives the result the feel of a vacation picture, taken by someone standing nearby.
As for the dramatic setting, Curiosity edged into the Bagnold dune field on Mars a few months ago, investigating the huge wind-swept sand dunes there. It’s been snapping pictures as well as scooping up and sampling the sand grains there as well. My friend and wonderful science writer Emily Lakdawalla has — wait for it, waaaaait for it — the scoop on that.
There’s one picture Emily posted that I want to mention. It shows sand grains taken by the Mars Hand Lens Imager (MAHLI), a camera on the rover that is capable of close-up images of the surface (the same one used to take the self-portrait). It’s a portion of this, a bigger image:
Look at that! Those are sand grains on Mars! This is the highest-resolution image ever taken on Mars by MAHLI, done by jockeying the camera closer to the surface than had ever been attempted before; again, see Emily’s post for the whole story, which is well worth your time.
I was curious (so to speak) about those pits in the sand, so I asked Emily, and she told me those are zap pits, blasted into the surface by Curiosity’s powerful laser! It vaporizes the material, which then glows from the heat. As it glows, a detector on the rover (called ChemCam) takes a spectrum of it, which reveals the chemical composition of the material.
By eye, I wouldn’t think twice if I scooped up sand like that here on Earth. Some of the grains are dark, some more glassy-looking. It could be the stuff I washed off my feet when I went to the beach not too far from where I grew up in Virginia.
Except it’s not. It’s on another world.
When that fact sinks in, really sinks in, it gives me chills. This is what we do, we humans. We send our proxies to other planets so that we may study them up close, and find out how they work. It’s simply and truthfully one of the noblest and best things we do.