GAVI asked and the world gave.

GAVI is the Global Alliance for Vaccines and Immunization. At a conference in Berlin today, the nonprofit group asked for help in meeting its goals of vaccinating 300 million children in low income countries against potentially fatal diseases.

The response was extraordinary: a total of $7.5 billion pledged to cover GAVI's 2016-2020 efforts.

A black and white photograph captures a scene that could never happen today.

It shows an American president riding through the streets of a city in Pakistan in a gleaming horse-drawn carriage, as if he's the Queen of England.

The city is Karachi, in the days when American visitors were not obliged by the presence of Islamist militants to conceal themselves behind blast-proof walls, sandbags and razor wire.

Whatever the question, Seattle Seahawks running back Marshawn Lynch has the answer. At a (mandatory) media appearance for the upcoming Super Bowl, Lynch stuck to one response Tuesday: "I'm just here so I won't get fined." After he said it nearly 30 times, he added one word: "Time."

What do the villagers of India think of the Obama visit? To find out, our intrepid village correspondent (and creator of the "Village Way" video for Goats and Soda) interviewed four residents of villages in the rural parts of Tamil Nadu, a state in South India.

Meet the villagers:

Simpson: The 25-year-old came back to his native village of Ayartharmam after earning a bachelor's degree in theology and religious studies. Simpson speaks English and is passionate about his rural home. He loves sports and reading.

Carl Krawitt has watched his son, Rhett, now 6, fight leukemia for the past 4 1/2 years. For more than three of those years, Rhett has undergone round after round of chemotherapy. Last year he finished chemotherapy, and doctors say he is in remission.

Now, there's a new threat, one that the family should not have to worry about: measles.