All bags are not created equal when it comes to the environment. And paper might not be as green as you think. Credit...Photo by Tony Cenicola/The New York Times Supported by By Rachel Nuwer With ...

Tremulous shadows appear to drip down the paper, offset by expanses of chalky ... into position but were actually created using paper stencils – which was neither a shortcut nor Hugo cheating ...

This simple felt tip pen paper chromatography experiment is a great way to learn about this particular method of separating mixtures. Felt tip pen chromatography is a fantastic science activity for ...