Why does puberty trigger us to stop growing?

All animals start out as a single-celled organism and then start growing. At some point, of course, they need to stop getting bigger, but the process by which this happens is poorly understood.

Q&A: One of the world's worst pests attacks California

One of the world's worst pests is infesting crops all over California. There are seven active quarantines spanning the length of the state, but experts say those affecting San Bernardino and Riverside counties are especially ...

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