From the pressurized space suits to living in underground spaces, it's clear that living on Mars would cause irreversible biological changes to any humans living there, to the point that it may be impossible for them or their descendants to return to Earth. With bigger heads and lighter bodies, might we also end up looking like Martians?

PLUS:

• Yellowstone’s predators battle it out, and wolves remain top dog
• fossil of the earliest veggie-eater found in Nova Scotia
• Covid is disappearing in animals, which is good news for deer but not as good for humans
• how genes affect our lifespan more than we thought

An elephant’s trunk is incredibly strong and rugged, and yet it is one of the most sensitive touch organs in the animal kingdom. New research reveals that this sensitivity is partly powered by over 1000 whiskers.

PLUS:

• A new 'inside out' solar system is making astronomers question planet formation
• Paleo-Inuit people in the high Arctic were masterful seafarers, new study shows
• Two-month-old babies can categorize objects in their brain
• How insects deal with smog or microplastics can impact them and the environment

Researchers made the surprising discovery that Alaska beluga whales have swinging sex lives — and that could be their key to survival in the warming Arctic.

Plus:

• mission to the 'doomsday' Thwaites glacier in Antarctica ends in disappointment
• near-infrared light therapy offers hope to football players with brain injuries
• with nuclear power making a comeback, what's changed since the last Atomic Age?