Marsupials are mammals that nurture their young in a special pouch. Their fossils are rare. Few have been discovered in Australia, for example, which is home to several unique marsupials, including kangaroos. So, determining their origins has been a longstanding challenge for evolutionists.

Philosopher and secular humanist Christopher diCarlo claims that if humans trace their lineages far enough back in time, they will all have an African origin. He has been spreading his "We Are All African!"¹ message on a cross-Canadian tour. However, the science behind diCarlo's version of history leaves plenty of room for skepticism.

The blob lives. Or at least, it has been reconstructed in a three-dimensional computer model.

An animal wouldn't grow larger than an insect without specialized equipment designed to transport oxygen to and carbon dioxide from cells deep inside its body. Fortunately, thousands of different animal kinds have been outfitted with tiny machines called hemoglobins that directly and specifically interact with individual oxygen molecules, making larger body sizes possible.

Does gravity exist?