Science Recorder - Social monogamy, although common in birds, is much less frequent among mammals. Primates, however, tend to be more monogamous than other mammals, with about 27 percent of primate species living in pairs. Scientists have long debated why this should be so. Now, researchers have concluded that monogamy among primates, including humans, evolved because such an arrangement protected infants from being killed by rival males. Read more.
Democratic presidential hopeful Elizabeth Warren told a room full of liberal activists on Saturday that the party needs to fully embrace polices such as higher taxes on the wealthy, wiping out student loan debt and criminal justice reform if they want to win the White House. Read more.