Google Inc. has announced its official decision and agreement with Motorola Mobility on purchasing the mobile phone manufacturer for 12.5 billion U.S. dollars in a move that gives Google a more heavy presence in the mobile phone market instead of indirectly going through Android and leverage for its business strategies in the smart phone market. The future presence of...

The preimplantation human conceptus would be destroyed by an attack by the mother’s immune system, as half of its contents come from its father. Instead, the conceptus temporarily increases its production of prostaglandin E2, which, when elevated, becomes a powerful immunosuppressant, to ward off the attack. In the absence of this mechanism, reproduction would be impossible....