Have you ever wondered why the spring season in both hemispheres feels as old as forever and as young as a newborn baby — at the same time?
Evolution goes back billions of years, but new possibilities open up whenever life awakens and reproduces itself.
On a related note, ever wonder about how cats evolved? Or how closely related house cats — the “lions in our living room” — really are to the big cats?

Sabercats cannot be ignored. (Image: Wim Hoppenbrouwers, CC BY-NC-ND 2.0)
And what about those saber-toothed cats?
Earth’s apex predators have gone from T. Rex & Company to today’s lions, tigers, and other carnivorous mammals (including domestic cats, which are apex small predators in most human-dominated habitats).
Why did evolution take this route?