What comes next after Supreme Court hands down gender ruling / U.K. Supreme Court issues key ruling on gender definition / Gender ruling will have immediate real-world consequences / Protests erupt as Iowa bill threatens gender identity protections / Iowa lawmakers vote to remove gender identity as a protected class / Alabama governor vows to sign bill that writes definitions of male and female into state law / Women lawmakers call for gender-sensitive drafting of laws / E.U. nations must recognize legal gender changes across bloc, top court rules / Germany passes law making it easier to legally change gender