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Volunteers plant 109,000 trees in new woodlands

Original reporting
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BBC visits wildfire front in haze-choked Indonesia
The BBC is in central Kalimantan, where a toxic haze fuelled by wildfires is choking millions of residents.

Mission set to blast off for Mars to grab a piece of its moon
A spacecraft is set to launch on an ambitious mission to bring 10g of Martian moon dust back to Earth.

Fuel leak spreads more than two miles along River Taff
Public Health Wales advises people living nearby to shut their doors and windows due to the smell.
Scientists discover a natural compound that could protect the brain from too much salt
Eating too much salt may do more than raise blood pressure. It could also harm memory and social behavior. In a new study, Japanese researchers discovered that a soy-derived compound called LPC70 helped protect mice from several damaging effects of a high-salt diet. Mice given the supplement had lower blood pressure, better memory, and improved social interactions compared with mice consuming excess salt alone.
Physicists create a bizarre new quantum state called a fractional fermi sea
Physicists have discovered a strange new state of quantum matter in which ultracold atoms defy familiar organizational rules, forming a highly excited yet surprisingly orderly configuration called a "fractional Fermi sea." The discovery challenges established quantum theories and hints at exotic quasiparticles that scientists have dubbed potential "super-Fermions."
Eating blueberries every day may have a surprising effect on your mood
Eating blueberries every day could have surprising effects on mood, according to a small study that found greater reductions in depressive symptoms among older adults who consumed the fruit for three months. Researchers also detected changes in gut microbial enzymes, suggesting a possible gut-brain connection, although the mood benefits were not statistically significant compared with a placebo.