Melanie Roach opens up about her struggle to accept son's autism.

New research finds the 'sunshine vitamin' can slow progression of breast cancer.

Simple, low-cost actions can make a huge impact for the world's hungry.

Presumptive GOP nominee walks difficult path to court Bush backers and haters.

White House downplays expectations that Saudis will boost production.

Death toll surpasses 21,000, but expected to double.

Myanmar regime stops foreigners from entering cyclone-hit region.

How two small actions can improve the way your family eats.

Top military diplomat speaks out on the challenge of getting aid to Myanmar.

Calif. Supreme Court makes sweeping decision to overturn same-sex marriage ban.

As party falls in behind Obama, a harsh welcome to the big leagues.

Earthquake warning systems are still in the research stages, say scientists.

ABC News takes a journey into the Arctic.

Myanmar's military junta is still resisting foreign aid.