Fossil fragments found in the U.K. have been identified as remains of the largest scorpions ever. Measuring more than a meter ...

Bryozoans are tiny, filter-feeding colonial invertebrates that thrive in the world's oceans today, yet for decades their ...

Continuous 90-year trends of butterflies and deadwood-dependent beetles show clear mid-century declines and only partial recovery of these taxa. The declines were clearly related to agricultural ...

Leishmania are microscopic parasites spread by infected sand flies that cause leishmaniasis, a group of diseases ranging from skin ulcers to life-threatening infections of internal organs. Credit: ...