Scientists have long suggested that the best way to settle the debate about how phenotypic plasticity may be connected to evolution would be to identify a mechanism that controls both. Harvard researchers say they have discovered just such a mechanism in insulin signaling in fruit flies.
A Harvard research team led by Kevin Kit Parker, a Harvard Stem Cell Institute principal faculty member, has identified a set of 64 crucial parameters by which to judge stem cell-derived cardiac myocytes, making it possible for scientists and pharmaceutical companies to quantitatively judge and compare the value of stem cells.
Harvard stem cell scientists have successfully converted skins cells from patients with early onset Alzheimer’s into the types of neurons affected by the disease, making it possible for the first time to study this leading form of dementia in living human cells.
Evidence is mounting that Earth’s water arrived during formation, aboard meteorites and small bodies called “planetesimals.”
After 26 years of workdays spent watching bacteria multiply, Richard Lenski has learned that evolution doesn’t always occur in steps so slow and steady that change can’t be observed.
Despite the dormant appearance of the trees, the Arnold Arboretum isn’t waiting for spring, as pruning, mowing, research, and planning continue to move ahead at full speed.
A new study offers the first evidence that fetal sex can affect the amount of milk cows produce, a finding that could have major economic implications for dairy farmers.
Scientists at Harvard have identified a previously unknown embryonic signal, dubbed Toddler, that instructs cells to move and reorganize themselves, through a process known as gastrulation, into three layers.
Remnants of Neanderthal DNA in modern humans are associated with genes affecting type 2 diabetes, Crohn’s disease, lupus, biliary cirrhosis, and smoking behavior. They also concentrate in genes that influence skin and hair characteristics. At the same time, Neanderthal DNA is conspicuously low in regions of the X chromosome and testes-specific genes.
Researchers have created embryonic stem cells without an embryo. This discovery of a novel reprogramming method of adult cells, without introducing external genetic material, could dramatically shift stem cell research.
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Cuttlefish, the “chameleon of the sea,” may offer researchers a model for bio-inspired human camouflage and color-changing products, some of which could be invaluable in wartime.
Four creations are back on display at the Harvard Museum of Natural History’s Glass Flowers gallery after a long absence.
Harvard scientists say they’re closer to unraveling one of the most basic questions in neuroscience — how the brain encodes likes and dislikes — with the discovery of the first receptors in any species evolved to detect cadaverine and putrescine, two of the chemical byproducts responsible for the distinctive — and to most creatures repulsive — smell of rotting flesh.
New research brings scientists closer to unraveling one of the longest-standing questions in evolutionary biology — whether limbs, particularly hind limbs, evolved before or after early vertebrates left the oceans for life on land.
Five species of giant, long-lived Galapagos tortoises are thought to have gone extinct, but recent DNA analysis shows that some may survive on other islands in the archipelago, according to work by Michael Russello, Harvard Hrdy Fellow in Conservation Biology.
Irene Pepperberg, best known for her work with an African grey parrot named Alex — whose intelligence was estimated as equal to that of a 6-year-old child — recently relocated her lab to Harvard, where she continues to explore the origins of intelligence by working with birds.
Using an imaging technique known as high-speed holographic microscopy, Laurence Wilson, a fellow at Harvard’s Rowland Institute, worked with colleagues to produce detailed 3-D images of malaria sperm — the cells that reproduce inside infected mosquitoes — that shed new light on how the cells move.
Tim Laman, an associate of Harvard’s Museum of Comparative Zoology and an award-winning wildlife photographer, was part of a two-man team that helicoptered into a remote Australian rainforest earlier this year, coming out with three new species: two lizards and a frog.
Harvard researchers have solved the nearly 200-year-old mystery of how Rafflesia, the largest flowering plants in the world, develop.
New research suggests that, despite moonlight’s apparent hunting advantage, large predators such as lions are actually less active on the brightest nights, while many prey animals — despite the risk of being eaten — become more active.