A San Diego rally against a scheduled visit by President Donald Trump.
AP Photo/Gregory Bull
Defiant against Trump's policies on immigration and environment, California finds itself defending its way of life – the California Dream itself.
Betsy DeVos, shaking hands at a school choice rally shortly before she became education secretary in 2017.
AP Photo/Maria Danilova
The cycle of overpromising and disappointment has left donors, politicians and policymakers of all stripes looking to improve K-12 public schooling with an underwhelming track record.
North Korean leader Kim Jong Un.
A scholar who has profiled leaders like Saddam Hussein and Vladimir Putin says there is a method to understanding the madness.
Bush, seen here in 2006, revoked his steel tariffs less than two years after imposing them in 2002.
President Trump slapped steep tariffs on steel imports, echoing protectionist measures taken by Bush in 2002.
Immigration advocates hold a rally on Capitol Hill.
AP Photo/Andrew Harnik, File
Scholars have you covered on all sides of the 'Dreamers' issue, with solid research to boot.
Healthy aquatic vegetation in the Chesapeake Bay.
Cassie Gurbisz/University of Maryland Center for Environmental Science
An ambitious plan to cut the flow of nutrients into the Chesapeake Bay has produced historic regrowth of underwater seagrasses. These results offer hope for other polluted water bodies.
President Trump announced the U.S. will slap steep tariffs on foreign steel and aluminum.
The president's plans to impose steep tariffs on foreign steel and aluminum mirror the misguided trade policies that helped precipitate the Great Depression.
Pres. Dwight Eisenhower, right, looking at a map in 1955 of highways to be built with federal funds that retired Gen. Lucius Clay, left, had outlined.
AP Photo/Byron Rollins
Despite all their anti-tax sentiments, Republicans from Hoover to Trump have embraced this levy on sales at the pump.
Samuel Zeif, an 18-year-old senior at Marjory Stoneman Douglas High School in Parkland, Fla., cries after speaking during a listening session with President Donald Trump in Washington on Feb. 21, 2018.
(AP Photo/Carolyn Kaster)
What are we to make of a society in which young children have a greater sense of moral courage and social responsibility than the zombie adults who make the laws that fail to protect them?
US-Mexico border fence that separates Tijuana, Mexico, from San Diego, Calif.
AP Photo/Rodrigo Abd
A scholar documented the risks a migrant faced after deportation, including his becoming involved in smuggling people across the border.
Warning sign at Kerr-McGee uranium mill site near Grants, N.M., December 20, 2007.
AP photo/Susan Montoya Bryan
The Trump administration's push for 'energy dominance' could spur a new wave of domestic uranium production. A scholar describes the damage done in past uranium booms and the visible scars that remain.
U.S. President Donald Trump points to Prime Minister Justin Trudeau as he welcomes him to the White House in Washington, D.C. in October 2017.
THE CANADIAN PRESS/Sean Kilpatrick
Canada's experience shows that selecting immigrants based on economic merit is not a silver bullet; finding the "right" immigrants is the only the first step.
Trump has made pushing protectionism since the campaign.
AP Photo/Chris Carlson
The idea that the US is historically a free trading country is a myth. Here's why that's a good thing.
Donald Trump doesn't have one foreign policy – he has several, and they all clash.
Cars sit in flood water from Boston Harbor on Long Wharf during a coastal storm on Jan. 4, 2018.
AP Photo/Michael Dwyer
They don't all support the same strategies for coping with it, but US mayors increasingly see climate change as a pressing urban challenge.
Trump with Supreme Court Justice Anthony M. Kennedy.
EPA/Jim Lo Scalzo
Donald Trump is far from the first president to politicise the judiciary, but the way he's going about it is uniquely dangerous.
The first food stamps program, created amid the Great Depression, lasted four years.
Franklin D. Roosevelt Presidential Library and Museum
SNAP and its precursors have weathered plenty of efforts to shrink the safety net. Its decades of bipartisan support make it likely to survive this one.
Texas farmer Taylor Wilcox received USDA funding to flood his fallow rice fields, creating habitat for black-necked stilts and other birds.
The Agriculture Department provides nearly $6 billion annually for land, water and wildlife conservation on farms. President Trump's 2019 budget drastically reduces funds for these programs.
Shale gas drilling site, in Lycoming County, Pennsylvania.
Nicholas A. Tonelli
Natural gas is widely viewed as a clean fuel, but methane, its main component, is a powerful greenhouse gas. Two experts propose a plan for detecting and cutting methane leaks across North America.
A naturalization ceremony in Los Angeles.
AP Photo/Damian Dovarganes
As Congress takes up the issue of immigration, we turned to our global network of scholars to get their perspective on how so-called merit systems work.