EnvironmentHow you can help save Britain's rivers by becoming a citizen scientist As part of New Scientist's Save Britain's Rivers campaign, we've rounded up the best citizen science projects that let you play an active role in improving the nation's waterways News
PhysicsUnevenly packed coffee to blame for weak espresso, say mathematicians A mathematical model shows that even small inconsistencies in how coffee is packed into an espresso machine can lead to weaker brews and watery flavour News