Imagine cells navigating through a complex maze, guided by chemical signals and the physical landscape of their environment.

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

HOUSTON, Texas (KTRK) -- We're not done with the rain quite yet! We started off Thursday dry but it's possible, in the afternoon to early evening, to see a few ... for storms to move into the ...