Welcome to this week’s Sunday Science, featuring renewable energy, the results of a big study into gene expression, and rainstorms on Titan.
First, some good news. 2016 saw record growth in renewable energy, with solar energy leading the charge. New solar PV capacity around the world grew by 50%, and solar PV additions rose faster than any other fuel for the first time, surpassing the net growth in coal. China is the lead in this, interestingly. Video below, but the report from the International Energy Agency is well worth reading.
Since we learnt how DNA codes for genes, the great puzzle has been trying to figure out how you turn genes on and off in appropriate cells, such that, for example, your liver cells don’t express brain proteins. The GTEx consortium, which aimed to answer this question, now reports on the variations in gene expression between tissues and individuals. Fairly technical Nature News article with links to the original (open access) papers.
There’s a plethora of online “intelligence” tests of more or less reliability, but here’s one with a difference: Cognitron is an AI-based web server that aims to learn about human intelligence, and develop improved cognitive tests along the way. (No I haven’t done them yet but I plan to!)
And finally, Earth isn’t the only place in the solar system to have intense storms. Titan one of Saturn’s moons, has intense rainstorms – of liquid methane. Featured Image is of Titan, Saturn’s largest moon, behind the planet’s rings. The tiny moon Epimetheus is visible in the foreground.
Credit: NASA/JPL/Space Science Institute, via Science Daily.