Here are some of the most interesting science news articles I read this week:
The dangers of red hair (and what science is doing about it)
Sleeping with your dog is OK
Monarch butterflies disappearing from western North America
Study finds legal cannabis may reduce use of dangerous prescription drugs
Lazy ants make themselves useful in unexpected ways
Is extreme weather getting more extreme?
"Light saber" offers precise tool to decipher cell function
Nanoparticles limit damage in spinal cord injury
Genetic relatives of extinct tortoises rescued for breeding program
Mechanism found tying calorie restriction and lengthened lifespan
Have a good weekend, everyone, and see you Monday!