Here are some of the most interesting science news articles I read this week:
Researchers find neural switch that turns dreams on and off
Our ancestors probably didn't get eight hours a night, either
Aaahh!! Real monsters! How parasites and pathogens colonized fiction
Link found between comet, asteroid showers, and mass extinctions
A century of induced earthquakes in Oklahoma?
Morticulture: forests of the living dead
Male and female hearts don't grow old the same way
Ancient ear muscles may still be helping humans
New evidence suggests life on Earth began much earlier than we thought
Scientists have genetically engineered dogs to make them muscly
Earth may have formed earlier than 92% of other habitable planets
Scientists have begun hunting for alien signals coming from mysterious star
Have a good weekend, everyone, and be sure to stop by Sunday for the Broad Universe Full Moon Blog Tour and on Monday for a special guest post by Gail Z. Martin!