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The differences in Covid-19 infection risk between ethnic minority healthcare workers and their white colleagues is likely due to home and work factors rather than biology, finds the largest and most detailed study on the subject, co-led by researchers at UCL. Previous research has shown that healthcare workers from ethnic minority groups are at a disproportionately higher risk of contracting Covid-19 than their white colleagues.

The most detailed timeline of mammal evolution to date has been set out in a new study co-led by UCL researchers. The Nature paper describes a new and fast computational approach to obtain precisely dated evolutionary trees, known as 'timetrees'. The authors used the novel method to analyse a mammal genomic dataset and answer a long-standing question around whether modern placental mammal groups originated before or after the Cretaceous-Palaeogene (K-Pg) mass extinction, which wiped out over 70% of all species, including all dinosaurs.

A Covid-19 booster vaccination markedly increases immune response in residents and staff within care homes, according to a new preprint study co-led by UCL researchers, making it vital that people living and working in these settings get their third jab. Age and frailty are already recognised as major risk factors for severe Covid-19 outcomes, with elderly residents of long-term care facilities suffering much higher rates of mortality during the pandemic than the general population.

Phosphorene nanoribbons have been incorporated into new types of solar cells, dramatically improving the cells' efficiency, in a new study led by UCL and Imperial College London researchers. Phosphorene nanoribbons (PNRs) are ribbon-like strands of the 2D material phosphorous, which, similar to graphene, are made of single-atom-thick layers of atoms.

The NASA-led James Webb Space Telescope, which includes hardware designed and built at UCL and which will image the very first stars to shine in the Universe, is scheduled to be launched into space later this month. The telescope, one of the great space observatories following Hubble, will be launched on-board the Ariane rocket from Europe's spaceport in French Guiana on or after Friday 24 December.

Giant, long-necked sauropods, thought to include the largest land animals ever, preferred to live in warmer regions on Earth, suggesting they may have had a different physiology from other dinosaurs, finds a new study led by researchers at UCL and the University of Vigo. The study, published in the journal Current Biology , investigated the enigma of why sauropod fossils are only found at lower latitudes, while fossils of other main dinosaur types seem ubiquitously present, with many located in the polar regions.

Scientists have spotted signs of 'pre-resistance' in bacteria for the first time - signs that particular bacteria are likely to become resistant to antibiotics in the future - in a new study led by UCL and Great Ormond Street Hospital researchers.

A "lab-grown model" of the human stomach that can be used to study how infections impact the gastrointestinal system, has been developed for the first time by a UCL-led team of international scientists. The team from Great Ormond Street Hospital (GOSH), UCL Great Ormond Street Institute of Child Health (UCL GOS ICH) and the Istituto Zooprofilattico Sperimentale delle Venezie (Legnaro, Italy), have built on recent advances to grow 'mini-organs' in a laboratory, known as organoids.

UCL academics will play a key role in a new three-year study investigating the long-term health impact of Covid-19 on NHS healthcare workers from diverse ethnic backgrounds and roles. Launched by the NHS Race and Health Observatory the 'REACH-OUT' study, builds on 'UK-REACH' (United Kingdom Research study into Ethnicity And COVID-19 outcomes in Healthcare workers), which is led by the University of Leicester in collaboration with UCL, University of Nottingham, national stakeholders and front-line healthcare workers.

The light from a smartphone screen can be used to print medications, in a new 3D printing technique developed by UCL researchers. The method could make it easier for personalised medicines to be prepared in clinics, remote areas or even in patients' homes. The report in the International Journal of Pharmaceutics is the first published study of smartphone-based 3D printing of pharmaceuticals.

During the COVID-19 pandemic, many mental health care service users were able to continue accessing some support by phone and video call (remote care), but the shift to remote care presented significant barriers to certain groups, finds a review co-led by UCL researchers. The authors of the systematic review are calling for further examination into the effects of telemental health on groups at risk of digital exclusion and for better evidence on long-term impacts.

Cells in the developing embryo can sense the stiffness of other cells around them, which is key to them moving together to form the face and skull, finds a new study by UCL researchers. In the study of frog embryos researchers found that embryonic cells can navigate away from soft regions of the embryo and toward harder regions.

A population of Seychelles frog have adapted to a warmer climate over time, but as these adaptations have evolved gradually, the rapidly warming climate still poses a threat to species' survival, according to a new study led by a UCL researcher. In the study published in Global Change Biology , the researchers report that a subgroup of the Seychelles frog ( Sooglossus sechellensis) adapted to historic sea level rise after finding themselves on an island with a different climate.

People choose whether to seek or avoid information about their health, finances and personal traits based on how they think it will make them feel, how useful it is, and if it relates to things they think about often, finds a new study by UCL researchers.

An international team involving researchers at UCL has discovered a new planet, GJ 367 b, whose surface temperature may reach 1,500 degrees Centigrade - hot enough to melt all rock and metal - and which takes only eight hours to orbit its star. In a new study, published in the Science journal, the researchers show that the planet, which is 31 light years from Earth, is one of the lightest among the nearly 5,000 exoplanets (planets outside our own solar system) that are known today, with half the mass of Earth.

UCL has published its first report setting out how the university is addressing the UN Sustainable Development Goals (SDGs). Developed by the UCL Sustainable Development Goals Initiative (SDGI), the report showcases a selection of the hundreds of ways UCL's staff and student communities are supporting the SDGs across their research, teaching and extra-curricular activities, as well as how the university operates.

Research into the logic behind AI shows that algorithms think in reliable and scientific ways that could help us learn undiscovered laws of physics, say PhD candidate Kai Hou Yip and Dr Quentin Changeat (both UCL Physics & Astronomy). Do you know what the Earth's atmosphere is made of? You'd probably remember it's oxygen, and maybe nitrogen.

Scientists at UCL have discovered that some patients with a common type of childhood cancer do not respond to treatment because of a rare and previously unrecognised type of cancer cell, which has the unique capacity to "lie dormant" during chemotherapy and resist its effects. The breakthrough study in mice, uncovers for the first time the specific biological features that explain why a small number of leukaemic cells are able survive the crucial first 28 days of chemotherapy for B-cell precursor acute lymphoblastic leukaemia (BCP-ALL).

The gender of a young father's firstborn child affects the likelihood of both him and his friends committing crime, a UCL-led study has found. For the first time, researchers established that young fathers who have a firstborn son rather than a daughter are convicted of fewer crimes in subsequent years, and crucially that this reduction also leads to a drop in criminal convictions among peers living in the same neighbourhood.

A Triassic herbivore, known for its supposed similarities to a modern-day ostrich, has been revealed to have an entirely different approach to feeding from previously thought, according to research involving UCL and University of Birmingham researchers. The new findings, published in The Anatomical Record , reveal a much broader diversity of herbivore behaviour during the Triassic period than has been recognised to date.