Typhoons May Spike Ground-Level Ozone in Chinese Cities, Study Says

Your email address has not been verified. Please click below to complete your registration. Already have an account? [Sign in to Sixth Tone](#) Almost there! Please confirm your email address by clicking the link in the email received from us. Please wait until the countdown has finished before clicking the resend button. Don't worry! Just fill in your email and we will help you reset your password. Activation email sent. Please wait until the countdown has finished before clicking the resend button. Open in Safari to download app Open in browser to download app Typhoon weather may accelerate the concentration…