The Carnot engine is a theoretical heat engine that sets the upper limit on how efficient any real engine can be, and understanding it reveals why perfect efficiency is impossible.
Not all mosquitoes spread malaria. Learn why only Anopheles species can transmit the parasite, which ones pose the greatest risk, and how to protect yourself.
Potter syndrome occurs when low amniotic fluid affects fetal development. Learn what causes it, how it's detected, and what the prognosis means for families.