John Wojcik pays tribute to a black US activist who spent six decades at the forefront of struggles for voting rights, economic justice and peace – reshaping US politics and inspiring movements worldwide
LAST week a team of scientists published their review of the evidence that has accumulated in the past few years about the properties and dangers of climate tipping points.
They compared this evidence with the 1.5-2°C rise in global temperature that will occur under the Paris Agreement. They found that we may still reach several climate tipping points or maybe have already crossed them.
A ”tipping point” is when a variable in a system, such as the global temperature in our climate, crosses a threshold which causes feedback.
IAN SINCLAIR recommends an important and timely book for climate politics right now and in the future
Reaching co-operation is supposed to be the beginning, not the end, of global climate governance, argues LISA VANHALA
200 years since the first dinosaur was described and 25 after its record-breaking predecessor, the BBC has brought back Walking with Dinosaurs. BEN CHACKO assesses what works and what doesn’t


