The horned land frog (Sphenophryne cornuta) carries babies on
its back New Guinea must be protected from the deadly chytrid fungus, or we could see
around 100 frog species be wiped out. Author provided...
Testosterone is primarily made in the testes,
and creates many of the characteristics we see in adult men.
In prenatal ultrasounds or at delivery, many new parents look between their baby’s legs:...