two rescued and another four still missing.

chimps tend not to make great grandmas.But what is much more rare are species where it is typical for females to spend a substantial fraction of their adult years in a post-reproductive state.

They present a challenge for the idea that menopause requires helpful grandmothersadded: There is no [evolutionary] fitness benefit from survival per se.from Arizona State University.

Arizona State University and the Ngogo Chimpanzee Project.Menopausal mammals also tend to have bigger brains.

who has written a related perspective article about the research.

But what is much more rare are species where it is typical for females to spend a substantial fraction of their adult years in a post-reproductive state.but will fall tail first into the Gulf of Mexico instead.

standing 397 feet tall and tipping the scales at more than 11 million pounds when fully fueled.but no recovery is planned for this initial test flight.

Then its expected to coast around the planet.The flight plan calls for the Super Heavy first stage booster to fall into the Gulf of Mexico after propelling the Starship upper stage out of the lower atmosphere.