Coming on the heels of a new study finding that malnutrition causes nearly half of all child deaths each year, leaders from around the world will convene tomorrow for a conference in London to address “the silent crisis of undernutrition.”

The meeting, called “Nutrition for Growth: Beating Hunger through Business and Science” aims to raise funds and political will to improve global nutrition, particularly for millions of pregnant women and children. The event is co-hosted by the UK and Brazilian governments and the London-based charity Children’s Investment Fund Foundation.

BOSTON, Mass. — Traffic flows down Boylston Street toward the Public Garden, past scurrying shoppers and T-riders, no longer pausing before the faded signs and soggy sneakers in front of Trinity Church. Joggers dart in and around Back Bay with purpose, angling for escape to the Charles River and its stretched, smooth track of pavement. And crowds gather at watering holes around the city, cheering on the Bruins and Red Sox.

As stories about the Boston Marathon bombings have slid off the front page — and out of many Bostonians’ day-to-day thoughts — by many measures, the city has returned to normal. But for some of the thousands of athletes, fans, and emergency personnel on Boylston Street last month when two homemade bombs unleashed ball bearings, nails and absolute terror in the final blocks of the Boston Marathon, the magnitude of what happened on Patriot’s Day is just beginning to reveal itself. 

Scientists in India made news around the world on Tuesday when they announced that they had developed a low-cost vaccine that could prevent a severe form of diarrhea caused by rotavirus. 

Indian company Bharat Biotech International manufactured the vaccine, in collaboration with the Indian government and nearly a dozen Indian and international partners.

At $1 per dose (for three doses), the oral vaccine Rotavac is a fraction of the cost of existing rotavirus vaccines and could go a long way to reducing childhood mortality. Globally, rotavirus leads to 435,000 deaths of children under the age of 5 each year – an estimated 100,000 of which are in India.

Diarrhea is India’s third leading cause of under-five death, according to the World Health Organization, and scientists say that around 30 percent of diarrhea is caused by rotavirus.

Nearly three million babies die within the first month of life – more than one million on the same day they are born – largely from preventable causes, according to a new report published today. 

Newborn deaths today account for 43 percent of all child deaths, up from 36 percent in 1990, the report said. The highest newborn mortality rates were in sub-Saharan Africa, where the number of newborns who died each year slightly increased in that time period.