Strontium titanate was once used as a diamond substitute in jewelry before less fragile alternatives emerged in the 1970s.

Toddlers begin making sense of occupations while visiting a pediatrician’s office or waving to garbage truck crews. Encourage ...

Lunar exploration is entering a new era. Long after the Apollo missions, a renewed international interest comes with ...

Plants, so often the minor characters in stories about charismatic living things, are the stars of this vividly illustrated ode to the power of green. They are food for animals from krill to elephants ...