hello. i m abby philip in washington. a desperate search is under way for survivors after a powerful 7.8 magnitude earthquake struck turkey and syria. the death toll is now more than 2500 and aid from across the world is pouring in. the aftermath of this is catastrophic. this was the strongest earthquake to hit that area in more than 100 years, and it struck while nearly everyone was asleep. hundreds of people this hour are still believed to be trapped. massive high rises reduced to rubble, as more than 50 aftershocks some as strong as 7.5 magnitude, make matters even worse for rescue crews. one survivor capturing this horrific moment that the building collapsed. floor after floor falling as people run from a massive debris cloud. nearby, another collapse. look at this. and video of dramatic rescues are also coming in. this child pulled from the wreckage. crews are now hoping to uncover more miracles in the rubble. cnn s scott mcclain will lead us off here. scott, a massive r