By Emma Baccellieri,Julie Kliegman,Kristen Nelson,Jamie Lisanti On the 50th anniversary of the landmark law, there are still hurdles to clear and inequities to redress—these five issues will define the future. A half century ago, the passing of Title IX helped women take their first strides toward leveling the playing field in sports. But today, there are new battlegrounds and issues that will define the future of the fight for equality and dominate conversations for years to come. EQUAL PAYWhen the final whistle blew and sealed the victory for the U.S. women’s national team at the 2019 World …