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The growing role of grandparents in raising children is right in line with human biology.

The great variety of aging styles among plants and animals suggests it can be controlled.

As our lifespans have increased, so too have our active years. Can that go on?

Nanoscale thermal physics guarantees our decline, no matter how many diseases we cure.

Failures of perception illuminate the neurology of how we see.

The biochemist explains the elements of life, sex, and aging.