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Scientists use DNA technology to build tough 3D nanomaterials

Scientists use DNA technology to build tough 3D nanomaterials

Science
March 19 (UPI) -- Researchers at Columbia University have found a way to marry the versatility of DNA nanotechnology with the toughness of silica-based materials. DNA technology can be used to design self-assembling, complexly organized nanoparticle structures. Advertisement In theory, these structures can be designed for a variety of applications, but in reality, these structures are too soft and only stable in specific environs -- limiting their usefulness. Scientists described the novel fabrication process in a new paper, published Friday in the journal Science Advances. "A significant level of designability at nanoscale, through our assembly approach, combined with demonstrated robustness, opens opportunities to build targeted 3D nanomaterials from nanoparticles," Oleg Gang, professo...

UN: Pandemic tough on millions of Mideast, NAfrican children

World
The U.N. children's agency says the global pandemic and ensuing lockdown have taken their toll on the mental and physical well-being of millions of kids in the Middle East and North AfricaBy NOHA ELHENNAWY Associated PressNovember 20, 2020, 10:13 AM• 3 min readCAIRO -- The global pandemic and ensuing lockdown have taken their toll on the mental and physical well-being of millions of kids in the Middle East and North Africa, the U.N. children's agency said Friday.In a survey of more than 7,000 households in seven countries in the region covering 13,000 children, UNICEF found that more than 90% of respondents believe the coronavirus pandemic has affected their children negatively.“Restrictions on movement and closure of schools had a severe impact on children’s daily routines, their social i...
Dolphins QB Tua Tagovailoa faces tough matchup in debut as starter

Dolphins QB Tua Tagovailoa faces tough matchup in debut as starter

Sports
MIAMI GARDENS, Fla., Oct. 28 (UPI) -- Tua Tagovailoa will debut as a starting quarterback on Sunday for the Miami Dolphins, and he has a tough matchup in the Los Angeles Rams. The Alabama product will stare at All-Pro defenders Aaron Donald, Jalen Ramsey and a stellar secondary when he takes his first snap Sunday at Hard Rock Stadium in Miami Gardens, Fla. Advertisement The Dolphins' game against the NFL's fifth-ranked pass defense and best defense in the NFC, in terms of points allowed, ranks as the toughest in at least a decade for a quarterback selected in the Top-5 of an NFL Draft. "I don't like to put expectations on anyone," Dolphins coach Brian Flores said Monday on a video call with reporters. "I think we just need to have good meetings, have a good walkthrough, have a good practi...
Greggs warns of tough times for ‘foreseeable future’ as it plans cuts

Greggs warns of tough times for ‘foreseeable future’ as it plans cuts

Business
Greggs has warned that trading will remain "below normal for the foreseeable future" as it plans cost-cutting measures that could see jobs go.The high street bakery chain said sales were recovering but were still almost 25% below last year's levels in recent weeks, following an even tougher August. Live updates on coronavirus from UK and around world 'Majority of Gr...
Futures flat as investors brace for a tough earnings season amid coronavirus crisis

Futures flat as investors brace for a tough earnings season amid coronavirus crisis

Finance
Stock futures were little changed in overnight trading on Monday as investors brace for an ugly earnings season with the coronavirus wrecking havoc on global corporate profits. Futures on the Dow Jones Industrial Average rose just 20 points. The S&P 500 and Nasdaq futures were also flatEarnings season is set to kick off on Tuesday with JPMorgan Chase, Wells Fargo and Johnson & Johnson reporting numbers in the morning. The first batch of results will give investors a sense of how devastating the hit to corporations could be from the pandemic.Analysts expect S&P 500 earnings growth to decline 10.2% in the first quarter year-over-ear, according to Refinitiv. There is also an unusually wide range of estimates given the unprecedented uncertainty from th...