Latest Nation headlines

Scientists just found another way that humans are creating greenhouse gases

A new study confirms a significant volume of emissions coming from a little-considered place.

Congress votes to override Obama’s veto of 9/11 bill

The tally was overwhelming, with most Democrats, including those in the Massachusetts delegation, voting to allow lawsuits filed by victims against Saudi Arabia. It was the first veto override of Obama’s tenure in the White House.

Cedar Rapids survives flood with makeshift measures, but seeks permanent levees

Hastily erected barriers were remarkably effective but officials still support a $500 million system of flood barriers.

Senate passes stopgap spending bill, $1.1b to fight Zika

The Senate has passed a bill to keep the government running through Dec. 9 and provide $1.1 billion in long-delayed funding to battle the Zika virus.

Black man fatally shot by police near San Diego

A black man who reportedly was acting erratically at a strip mall was shot and killed by an officer, leading dozens to protest.

Three wounded in S.C. elementary school shooting

A teenager opened fire at the Townville Elementary School, wounding two students and a teacher before being taken into custody.

JFK: 50 Years Later

Special section

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2013/11/21/BostonGlobe.com/National/Images/KENNEDYANNIVERSARY-4.jpg

A five-part series examining the profound impact of former President John F. Kennedy’s assassination.

Globe Investigations

Special section

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2013/10/01/BostonGlobe.com/Special/Images/magnifying_glass1500618-081--90x90.jpg Recent investigative reports

Read recent stories and ongoing investigations from the Globe’s journalists.

Gay marriage in the US

Interactive Graphic

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2013/08/01/BostonGlobe.com/National/Images/Untitled-12.jpg Timeline of gay marriage in US

In the early 1970s, there were zero states banning or allowing same-sex marriage. Now it’s legal nationwide, and all bans have been overturned.

Instagram

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2013/12/17/BostonGlobe.com/Metro/Images/a4a68392593311e3a80a0a154a02c3a8_7-7210--90x90.jpg Boston Globe Instagram photos

A live stream of Instagram posts from The Boston Globe photo department.