There are signs that aliens might be harnessing the power of stars in our galaxy to fuel their civilisations. Dyson spheres are structures that surround entire stars to absorb their energy. Although these are just hypothetical,Being able to freeze human brain tissue could be a game-changer for medical research. While freezing brains is easy, thawing them out without damaging the tissue is much harder. But nowis being conducted throughout the forests of Costa Rica.
Orchids may share food with their offspring. Lab experiments have shown for the first time that parent orchids may be using fungal pathways – the mycorrhizal network – to send vital sugars to seedlings that cluster around them. Ancient Egyptians were reliant on the Nile river to transport materials used to build the world famous pyramids. But many of those pyramids are built on inhospitable, arid land, far from the Nile. So how did they get the materials there?
Hosts Christie Taylor and Rowan Hooper discuss with guests Jacob Aron, Alexandra Thomspon, James Dinneen and Chen Ly. To read more about these stories, visit