Here are some of the most interesting science news stories I read this week:
Most precise measurement of the proton's mass
Holographic imaging could be used to detect signs of life in space
In saliva, clues to a "ghost" species of ancient human
Neuroticism may postpone death for some
Secrets of undersea chemical reactions revealed; could they reduce CO2 in the atmosphere?
Indigestible drug-delivery materials may help patients comply with treatment regimens
Clearest evidence yet of long-sought Majorana particle
Could spraying particles into marine clouds help cool the planet?
Understanding the constant dialogue that goes on between our gut and our brain
Significant ongoing decline in sperm counts of Western men
Studies help understand why some people are so sure they're right
Neolithic farmers practiced specialized methods of cattle farming
Using powerful Dark Energy Camera, scientists reach the cosmic dawn
Have a good weekend, and see you Monday!