These species have evolved to survive extreme environments and live far beyond what we typically associate with animal lifespans.

Mosquitoes have reached Iceland, a place once thought too harsh for them to survive. Climate change may play a role in this shift.

Siberian Rubythroat, Isabelline Shrike, two Oriental Turtle Doves, and Boat-tailed Grackle provided the week's big talking points. Miles Cluff reports.