Martha Sandoval

Bilingual bicultural journalist. 30+ years of experience in TV, print, radio, and digital media in the US, Ecuador and Spain. News anchor, writer, reporter, interviewer.

News

Who actually invented the lightbulb—and the illuminating history of modern lighting

Thomas Edison at the lightbulb's golden jubilee anniversary.

Careers & Education

100 colleges whose grads go on to earn the most

Fun, colorful, irregular, postmodern architecture of MIT Stata Center in Cambridge, Massachusetts

Environment

How lifetime emissions of different energy sources stack up

Large wind turbines lined up in a green field.

Environment

What to do after car damage from a natural disaster

A car on a flooded street.

Careers & Education

Rhode Island, Massachusetts colleges have the highest graduation rates—here's how your state compares

A group of college graduates dressed in caps and gowns as they wait for their graduation ceremony.

Environment

20 of the strangest natural phenomena in America

A lunar rainbow and a shining full moon against a clear, dark sky

Military

60 historic photos from American military history

View of American M1A1 Abrams tanks as they cross the desert during the Gulf War, Iraq, 1991.

Health

Healthiest states for seniors

Happy senior couple riding bicycles in the park

Careers & Education

5 countries that offer free college—and how they accomplished it

Group of international students walking outside college building.

Social Issues

States where gun sales have increased the most since 2011

Gun rights activists gather for a rally at the Michigan State capital building in Lansing, Michigan.