Bloomberg Manhattan resale home prices tumbled by the most in more than four years, a sign that sellers are lowering their expectations in a slowing market where buyers have the option to walk away. The median price of previously owned condominiums and co-ops fell 6.3 percent in the fourth quarter from a year earlier to $900,000, according to a …

  Bloomberg AT&T Inc. has reached speeds of up to 14 gigabits a second in lab trials of 5G wireless technology, and plans to test the high-speed network by beaming its DirecTV Now video service to homes in Austin, Texas before midyear. Through a collaboration with a dozen partners including Intel Corp., Ericsson AB and Qualcomm Inc., AT&T plans to …

Any summation of Barack Obama’s impact on domestic policy and politics should begin with this: In 2008, he assured supporters, “We are the ones we’ve been waiting for. We are the change that we seek.” Soon he will be replaced by someone who says, “I alone can fix it.” So, Americans have paid Obama the compliment of choosing continuity, if …