NPR News

A collection of activists — from labor unions to immigrant rights groups — are planning protests across the country tomorrow to mark May Day.

Of course, the highest profile organization is Occupy Wall Street, which has called for a "general strike" and says events are planned in 135 U.S. cities.

Here's how the movement describes its plans on its website:

More than 100 people are dead after an overcrowded river ferry sank in India today. The AFP reports the ferry sank after being split into two by a storm.

The AFP adds that about 100 others were missing:

"As rescuers struggled in heavy rain to find survivors weeping relatives lined the shores of the fast-flowing Brahmaputra river in Assam state, desperate for news of family members on board the vessel.

Should women in their 40s routinely get mammograms to detect breast cancer?

Two studies released Monday aim to help resolve that question, which is one of the most intense debates in women's health. The studies identify which women in their 40s are most likely to benefit from routine mammograms.

For years, the mantra was that regular mammograms save lives. So many people were stunned in 2009 when an influential panel of experts questioned that assumption.