Tag Archives: human

Article summary Stable isotope analysis reveals ancient diets: By measuring ratios of carbon and nitrogen isotopes in bones and teeth, scientists can determine whether prehistoric individuals consumed C3 or C4 plants, and whether they were herbivores or carnivores. This technique has illuminated dietary habits from Neanderthals to early hominins. Advanced methods refine dietary insights: Techniques …

Neural organoids were differentiated from iPSC-derived Neural Progenitor Cells (NPC) for up to 14 weeks and characterized throughout development (Fig. 1a). Gene expression of synaptic plasticity markers was quantified from week 0 to week 12. Calcium signaling development was analyzed from week 2 to week 14. Finally, electrical activity was characterized by High-Density Microelectrode Arrays (HD-MEAs) over two independent time periods, from …

Chinese scientists have found a way to turn human stem cells into dopamine-producing brain cells, transplanting them into mice and helping reduce depressive behaviour and boost pleasure. When the engineered neuron-like cells were grafted into depression-model mice, they helped lessen symptoms like anxiety and resignation while increasing feelings of enjoyment. The development has the potential to be employed as a …

The story of human evolution is not a simple ladder from early forms to more advanced ones. For decades, fossils shaped a picture of steady, linear progress – one form giving rise to another in a neat sequence. But science often rewrites its narratives when new evidence appears. Now, remarkable finds in Ethiopia are challenging long-held assumptions and painting a …

Ann Hodges never intended to be famous, but in 1954 she found herself thrust into the national spotlight when her afternoon nap was interrupted by a falling meteorite. The Alabama woman has the distinction of being the first documented case of a person being struck by a meteorite. She survived with a bruised hip. In June, a man nearly joined …

Ancient, fossilized teeth, uncovered during a decades-long archaeology project in northeastern Ethiopia, indicate that two different kinds of hominins, or human ancestors, lived in the same place between 2.6 million and 2.8 million years ago — and one of them may be a previously unknown species. The discovery provides a new glimpse into the complex web of human evolution. Ten …

Research from scientists at University of California San Diego School of Medicine have shed new light on an age-old question: what makes the human brain unique? The team’s discovery comes from their investigation of human-accelerated regions (HARs) — sections of the human genome that have accumulated an unusually high level of mutations as humans have evolved. There is a lot …

Animal stories Ancient creatures History uncovered Africa See all topics Facebook Tweet Email Link Ancient, fossilized teeth, uncovered during a decades-long archaeology project in northeastern Ethiopia, indicate that two different kinds of hominins, or human ancestors, lived in the same place between 2.6 million and 2.8 million years ago — and one of them may be a previously unknown species. …

A microscopic view of a nine-day-old human embryo shows a protein found in embryonic stem cells in green, developing tissue in magenta and DNA in blue. Credit: Institute for Bioengineering of Catalonia (IBEC) A time-lapse film offers a glimpse of a hidden milestone of human development: the moment when the newly formed embryo latches onto the uterine lining. Researchers have …

The first human case of West Nile virus this season has been confirmed.  The Windsor-Essex County Health Unit (WECHU) says one person has tested positive.  West Nile is transmitted through the bite of an infected mosquito and residents are urged to take precautions such as wearing bug spray, removing standing water from their property, wearing long sleeves and pants and …