For millennia the Aral Sea reigned as one of the planet's largest inland bodies of water, straddling what is now Kazakhstan and Uzbekistan. Today its decline serves as a cautionary tale.
Hidden beneath the soil of the forest understory is a labyrinth of fungal connections between tree roots that scientists call the mycorrhizal network.
Residues from consumer products may stop sea life from developing normally.
Ken Jennings tells the strange story of an island between India and Bangladesh that was discovered in the 1970s, all but disappeared by 2014, and was contentious for its entire existence.