The first celebration of the U.S. Flag's birthday was held in 1877, on the 100th anniversary of the Flag Resolution of 1777. However, it is believed that the first annual recognition of the flag's ...

Ion channels are integral membrane protein assemblies that modulate the flow of ions into and out of a cell or organelle, leading to generation of electrical signals. Opening (gating) of ion ...

We invited teenagers to write miniature memoirs about meaningful moments in their lives. Read the 20 winning stories. By The Learning Network This year’s Super Bowl was likely the biggest ...