After today's legal arguments and judicial questioning, the US Supreme Court will probably take until June to rule on same-sex marriage. Advocates have targeted California's Proposition 8, which banned such unions five years ago. Also, how the "sequester" is cutting into the future of scientific research in space and medicine.
Banner image: Anti-Proposition 8 protesters wave a rainbow flag in front of the US Supreme Court in Washington, March 26, 2013. Photo by Jonathan Ernst/Reuters