AFP reports French lawmakers have paved the way to impose age limits on social media users.

Wang Kejian’s team at the China Rice Research Institute reported development of a one-line hybrid rice, Yixi No.1, achieving stable cloning efficiency above 99% and normal fertility; the study was published July 21 in the journal Vita. By contrast, China’s widespread three-line and two-line hybrid systems suffer genetic segregation and cannot be used to retain seed, forcing annual production from male-sterile and restorer lines — a process the team says is technically demanding, higher risk and typically drives hybrid seed costs to more than 10x conventional rice seed. Experts note hybrid rice has been indispensable to China’s and global food security.

美军增兵、胡塞海上禁令、十天停火方案在同一天出现，消息在两头高频喊价；但为何每条消息都在制造波动，却不再改变趋势？我们究竟如何判断哪条消息值得交易？