1.   Gore, lacking such charisma, could not fight the gravity he helped create.

2.   The river was serene, a pale green ribbon of water, framed by cliffs dotted with cactuses and olive trees, determinedly fighting gravity.

3.   To get into space, astronauts have to fight gravity.

4.   When other skiers fought gravity at The Brinks, a treacherous section at the top of the course, Maier hugged the fall-line.