Times (UK): Climate change protesters are to hold two demonstrations on April 1, one at the European Climate Exchange on Bishopsgate in the City of London and the other to disrupt a dinner at the British Museum to celebrate the centenary of BP. E-mails are going out for the Exchange event, which will create a protest camp outside. “Bring a pop-up tent if you’ve got one, sleeping bag, wind turbine, mobile cinema …,’ says the website. The protesters say that the “brain-bending system of …