Omar Mohammed

1 week ago | bostonglobe.com | Omar Mohammed

FALL RIVER — On a recent morning at Portugalia Marketplace in the center of this city, customers perusing through the grocery store found all sorts of Portuguese offerings — olive oils, wines, and snacks, and prepared meals, such as traditional codfish casserole and roasted octopus. There are “almost exclusively imported products on our shelves. So everything that we sell is subject to tariffs, unfortunately,” he said.

3 weeks ago | nature.com | Chenglin Yang |Bitao Dong |Omar Mohammed

AbstractDefective and mechanically weak interfaces substantially undermine both the efficiency and stability of perovskite solar cells (PSCs). Here we introduce a linear polymer, heparin sodium, as a multifunctional interface bridge layer in n–i–p PSCs. Unlike commonly employed small-molecule interface modification/passivation materials, heparin sodium features functional groups and ions including COO−, SO3− and Na+ distributed along the top and bottom sides of its backbone.

3 weeks ago | bostonglobe.com | Omar Mohammed |Scooty Nickerson

Short-term visa holders who overstay their visit to the US make up a significant part of immigrants who become undocumented, according to immigration experts, even as the overall rate of visitors who remain in the country beyond the period allowed is significantly low. Nearly 400,000 people who had these visas issued in the 2023 fiscal year have remained beyond their allowed stay, according to the most recent estimate by the federal government.

1 month ago | bostonglobe.com | Omar Mohammed

FAIRHAVEN — The Delano Homestead Bed and Breakfast sits on a tree-lined street in the center of the historic village right across from Fairhaven Town Hall, the 19th-century French Gothic building where Mark Twain is said to have given a speech. It’s the kind of neighborhood tourists love to find in New England, one that attracts visitors to the region, especially in summer.

1 month ago | bostonglobe.com | Omar Mohammed

Boston-area Jewish leaders on Thursday said they were devastated by the shooting and killing of two Israeli embassy staff members in Washington, D.C., who were departing an event at a Jewish museum. Rabbi Marc Baker, the president and CEO of Combined Jewish Philanthropies, an umbrella organization that supports Jewish institutions across Greater Boston, said that the community is in shock.