Nikon’s Small World in Motion competition offers a unique window into life under a microscope. A tardigrade, colloquially known as water bears, move around a volvox algae colony. Tardigrades are water ...

Palo verde trees are bursting into early bloom around Tucson — creating splashes of yellow desert beauty but also ushering in a season of sniffles for some allergy sufferers. “This year is earlier ...