Headphone designers have to balance scientific limitations with human preferences.
Vladimir Godnik via Getty Images
There is a lot to consider when buying a new pair of headphones. A professional musician and acoustics researcher explains how the science of sound and quirks of human hearing make for a great listening experience.
A Muslims Giving Back volunteer delivers warm food to a homeless man in New York City in April 2020.
P Photo/Wong Maye-E
Muslims also gave more to causes tied to relief from economic and health problems that arose during the COVID-19 pandemic.
Testing kids for lead exposure starts with a fingertip prick.
Brett Carlsen/Getty Images
The Centers for Disease Control has announced a new, stricter standard for lead poisoning in children, which will more than double the number of kids considered to have high blood lead levels.
Claire Babineaux-Fontenot, CEO of the national Feeding America anti-hunger network, meets with Jay Worrall, president of a Pennsylvania food bank.
Ben Hasty/MediaNews Group/Reading Eagle via Getty Images
The Chronicle of Philanthropy’s latest ranking indicates that the coronavirus and heightened awareness about racism made a difference, but not necessarily a lasting one.
Girl Scout cookie sales include a charitable donation.
Will Lester/MediaNews Group/Inland Valley Daily Bulletin via Getty Images
Even after the #MeToo movement hit its stride, support for these organizations still made up only a sliver of all charitable donations in 2018.
Clinical trials demonstrate how effective vaccines are individually, but the real world shows how effective they are at a population level.
AP Photo/Mark Lennihan, Pool
Using a robust statistical model, researchers estimate that coronavirus vaccines had prevented 140,000 deaths by May 9, 2021.
In the early 1960s, Barry Goldwater, a Republican U.S. senator from Arizona, called for the GOP to adopt racist principles.
AP Photo/Henry Burroughs
For much of the country’s history, the Republican Party was the party of Lincoln and racial equality, and the Democratic Party backed Jim Crow laws and white supremacy. The two parties switched.
People of color tend to give differently than white donors.
FatCamera/E+ via Getty Images
Larger shares of Asian, Black and Hispanic people are donating to these nonprofits, compared with white donors. They are also more likely to give to others through less formal channels.
People evacuated from Afghanistan arriving in the U.S. flew to Dulles International Airport in northern Virginia.
AP Photo/Gemunu Amarasinghe
Needs will continue in Haiti and New Orleans – and for Afghan refugees – long past the point when most donors will have found new priorities.
French Gates (left), shown here with Oprah Winfrey, makes gender equity a top priority in her giving.
Bryan Bedder/Getty Images
Winners of a new gender-equity contest do an array of work that includes helping caregivers and trying to reduce intimate-partner violence.
Attorneys George E.C. Hayes, left, Thurgood Marshall, center, and James M. Nabrit, all HBCU grads, successfully sought to defeat school segregation in court.
When white philanthropists made large gifts to these schools in the 19th century and early 20th century, many insisted upon a vocational focus for Black higher ed.
When money comes with strings attached, it doesn’t always do the most good.
spukkato/iStock via Getty Images Plus
Nonprofits rarely get money they are free to spend on any purpose.
Tens of millions of American families are getting a monthly allowance from Uncle Sam.
Thomas Barwick/DigitalVision via Getty Images
Experts explain the significance of this new ‘allowance.’
Lead in pipes can contaminate the water supply, resulting in poisoning.
AP Photo/Julio Cortez
Three experts explain a few aspects of American infrastructure that desperately need investment.
Black heavyweight champion Jack Johnson, right, beat James Jeffries in 1910, sparking racial violence.
George Haley, San Francisco Call, via University of California, Riverside, via Library of Congress
Johnson’s victory, in the manliest of sports, contradicted claims of racial supremacy by whites and demonstrated that Blacks were no longer willing to acquiesce to white dominance.
Raising children strains most household budgets.
Universal Images Group Editorial/Getty Images
Starting in July 2021, most US families will get monthly payments from the IRS of either $250 or $300 per child under 18.
Donors who itemize their tax returns can get a discount.
porcorex/ E+ via Getty Images
Giving $100 to a favorite charity costs less than that for the roughly 8.5% of Americans who use this tax break.
Joe Biden, right, and his son Beau had a strong relationship until Beau’s death in 2015.
Paul J. Richards/AFP via Getty Images
Biden’s relationship with his father contrasts with perhaps every president in the last four decades, who either had absent or distant fathers or abusive or alcoholic fathers or stepfathers.
Food banks, with help from volunteers, scrambled to meet higher demand.
Paul Hennessy/NurPhoto via Getty Images
Normally, giving declines when the economy contracts. But charitable donations grew anyway, two researchers explain.
People are mobilizing billions of dollars by chipping in.
Orbon Alija/E+ via Getty Images
A research team found that crowdfunding is a popular way to support social justice causes. They also determined that little of this charitable giving supports strangers.