After 40 million years, the Sun may be setting for one of the world's largest land animals. Three of the five surviving rhino species are critically endangered, poaching rates are off the charts, and the northern white rhino is down to a single representative.
How much can you pack on top of one rocket? A United Launch Alliance Atlas V is carrying up the U.S. Air Force's so-called secret space plane, The Planetary Society's solar sail, and several CubeSats, or tiny satellites.
Ireland is due to hold the world's first popular vote to decide whether gay and lesbian couples should be allowed to marry. The most recent opinion poll in The Irish Times indicated that 58% will vote in favor with 25% against, 17% were undecided or would not vote. Leaving aside the latter, this would suggest that 70% will vote Yes.