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As fires across the amazon basin continue to burn, we speak to the researchers watching from space and from the ground. Also, new pictures back from the surface of asteroid Ryugu thanks to Germany鈥檚 MASCOT lander, part of the Japanese Hyabusa2 mission, give insights into the clay from which the solar system was originally formed, and Greenland鈥檚 top geologist gives his valuation of his native island for prospective purchasers.

Many of us struggle to motivate ourselves to carry out certain tasks, from hanging out the washing to writing a job application. How can we best motivate ourselves? And how can we avoid procrastination? Listener Moses in Uganda wants to find out. Anand Jagatia puts science to the test as he trains and participates in an open water swimming race which Marnie Chesterton has kindly volunteered him for.

(Photo: Wildfires in Amazon rainforest. Credit: REUTERS/Ueslei Marcelino)