Tom Metcalfe

All Stories by Tom Metcalfe

  1. Animals

    Genetics might save the rare, elusive saola — if it’s not already extinct

    A new genetic study could help saolas survive by enabling better searches through environmental DNA. But some experts fear they may be extinct already.

  2. Archaeology

    These ancient Maya-era puppets may have been used in rituals

    The puppets, unearthed in El Salvador, have movable heads, strange facial expressions and may have been dressed for ritual roles.