Much of the world's farmland is already at risk from palmer amaranth. The threat could spread further north as the climate warms.
Deep water reptiles diversified as Mesozoic sea levels rose. Their shallow water counterparts declined.
Armadillos could help fill ecological voids left by the Southeast's waning gopher tortoise populations.
Drought killed off inedible plants in Kruger National Park, making room for other plants that animals like to eat.
Populations with a variety of genes can help a species adapt to threats like diseases and climate change.
Blowflies serve as natural sampling instruments to learn what is pooping and dying in an area.