Some of the body's cells stay put for life, while others are free to roam. To move, these migratory cells rely on filopodia—sensitive, finger-like protrusions that reach out from the cell membrane ...

At first glance, the hexagonal cells build by honey bees and social wasps may seem similar, but they are significantly different. Honey bees build using wax, whereas wasps use paper. Honey bees build ...