Women need to be on the Rio docket. (Photo by Cintia Barenho.)

In just two months, world leaders will gather in Rio to hammer out a new set of agreements on what sustainable development means, and more importantly, how both rich and developing nations can get there before it’s too late. Day by day, the buzz is building around this historic Earth Summit. But there’s a problem: The big plans being hatched for the occasion — nicknamed Rio+20 — leave women out.

Of course there will be scores of women leaders at the Earth Summit. But key issues that matter to women — reproductive health, gender equality, girls’ education — are notable for their absence from the agenda. That needs to change.