Scientific American

Brain differences in children and teens who experiment with drugs early show up before they take their first puff or sip

Flash floods happen when heavy rains unleash more water than the ground can absorb, causing that water to pile up and flow to low-lying areas

In principle, this impossible math allows for a glue-free bridge of stacked blocks that can stretch across the Grand Canyon—and into infinity

Answering the question of when consciousness emerges is deeply tied to the mystery of what it actually is and how it can be measured

Chemical fingerprints from volcanic rock offer hints of what’s happening in the mantle below the area where three rift zones meet in East Africa

But there is little evidence to show that the process is increasing precipitation