Last Saturday, over 600 protest marches in the name of science took place - in Australia, New Zealand, North America, South America, Japan, and even South Korea. Tens of thousands of scientists and their supporters rallied around the world, in a rebuke to Donald Trump’s dismissal of climate science and scientific research cuts. Organisers warned that science is ‘under attack’. Placards demanded ‘science not silence’, and ‘there is no Plan B’. The marches took place on Earth Day, one week before tomorrow’s People’s Climate March when a series of large-scale environmental events that will be more overtly political are due. See also: