The evolution of dietary and hygienic habits in Western countries is associated with a decrease in the bacteria that help in digestion. These very bacteria were also found in the Iceman, who lived ...

Got a confidential news tip? We want to hear from you. Sign up for free newsletters and get more CNBC delivered to your inbox Get this delivered to your inbox, and ...

This lesson plan provides students with evidence that all living things grow and change as they progress through their life cycle. All of the activities detailed in this lesson plan can be done with ...

Researchers at the University of Michigan report that residue from nitrile and latex gloves can transfer polymer fragments into lab workflows that may be misidentified as microplastics, potentially ...

Mathematica needs you! Add, subtract, divide and multiply your way to victory. Meet the Karate Cats and practice spelling, grammar and punctuation as you chop, kick and smash the challenges. Join ...

For more than 160 years, the National Academies have provided nonpartisan, evidence-based advice on decisions that affect our nation. Browse the listing of projects and activities to see examples of ...