Stores are selling Halloween stuff in August. Time has lost all meaning | Dave Schilling

The long-running series in which readers answer other readers’ questions probes an intriguing scientific question in relation to the climate emergency Readers reply: Is it inevitable that consumerism will literally fill up the planet? If all the vehicles on the planet had their tyres pumped up with CO2, would this lock up enough carbon to lower the amount in the air significantly? Would there be other issues, such as the carbon cost of trapping it all into the tyres? Chris Coldwell, Lancaster Post your answers (and new questions) below or send them to nq@theguardian.com. A selection will be published next Sunday...

Since Hurricane Sandy in 2012, a growing labor movement has addressed the climate crisis and economic inequality Ryan McElroen had spent years repairing the New York City subway underground when he got the opportunity to work in the middle of the ocean. “I had no views other than the darkness at work,” he said. “Then I went polar opposite.”..

Towering woodlands in the West are being permanently replaced by tracts of spiky shrubs. Conditions “just aren’t normal anymore,” one researcher said.