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Animals

Pollen hitches a ride on bees in all the right spots

Flower reproduction depends on the pollen that collects in hard-to-reach spots on bees, a new study shows.

Planetary Science

Readers were curious about rogue planets, exomoons and more

Readers had questions about rogue planets, human arrival in Australia, and exomoons.

Science & Society

Learning is a ubiquitous, mysterious phenomenon

Acting Editor in Chief Elizabeth Quill talks about the science of learning and how our brains process new knowledge.

Artificial Intelligence

Machines are getting schooled on fairness

Machine-learning programs are introducing biases that may harm job seekers, loan applicants and more.