Here is a concise original summary based on the information published by the source. Teenager loses hand in blast amid French school protest clashes Al JazeeraFrance braces for national day of school protests as boy loses hand The GuardianFrance braces for national day of school protests after injuries and mass arrests BBCTeenager has hand blown off during French school protests, official says ReutersTeen's hand blown off by police grenade during French student protests: report foxnews.com For the full context and any later updates, use the original source link.