Will China dominate science?

China is fast becoming a world leader in science, but should the world worry? Our deputy editor, Ed Carr, examines the impact of China s scientific expansion. Click here to subscribe to The Economist on YouTube: https://econ.st/2xvTKdy Daily Watch: mind-stretching short films throughout the working week. For more from Economist Films visit: https://econ.st/2o8kfOB Check out The Economist’s full video catalogue: http://econ.st/20IehQk Like The Economist on Facebook: https://econ.st/2o8kglD Follow The Economist on Twitter: https://econ.st/2o8khpH Follow us on Instagram: https://econ.st/2o8khWJ Follow us on Medium: https://econ.st/2o8kitL