Russia’s leading Kremlin critic, Alexey Navalny, was detained by local police, moments after his return to the country and five months after he was poisoned with the nerve agent Novichok. CNN’s Frederik Pleitgen reports Navalny had originally been scheduled to land at Vnukovo airport, where a crowd of hundreds of supporters and journalists waited. CNN has been unable to establish why the flight was diverted.
In the wake of the flood, could Nepal avert the next disaster? 
‘The Deep End’ podcast is back to explore what makes your voice yours 
Magnetism may have helped kick-start our solar system 
Peru’s penguins are on the brink. A super El Niño could make it worse. 
These are the first feathers ever found in fossilized dinosaur poop 
See the secret to DNA hookups 
Fragmented Policies Hold Back Agroecology Adoption in Africa’s Congo Basin 
The Takeaway Day 6: General Debate ends with a plea to turn words into action