Babies to order. Andrew crotty/Shutterstock.com
When Adam Nash was still an embryo, living in a dish in the lab, scientists tested his DNA to make sure it was free of Fanconi anemia, the rare inherited blood disease from which his sister Molly suffered. They also checked his DNA for a marker that would reveal whether he shared the same tissue type. Molly needed a donor match for stem cell therapy, and her parents were determined to find one. Adam was conceived so the stem cells in his umbil ...read more
An intriguing new study uses the 2016 US Presidential election as a tool to examine the organization of human memory.
The results show that events that occur around the same time are linked in memory. Remembering one past event tends to trigger the recall of other memories from that time. This chronological clustering makes intuitive sense, but it's a theory that's been debated in psychology for a while, under the name of the temporal-contiguity effect (TCE).
According to the authors of th ...read more
The genetic modification of crops (GMOs) and the concept of designer babies (thanks to CRISPR technology) may be two of the most recognizable, yet controversial, topics related to the field of genetic engineering. At its core, genetic engineering, also known as bioengineering, is the genetic modification of an organism. Some view genetic engineering as an enigmatic topic, shrouded in mystery and limited to the lab.
However, genetic engineering isn’t limited to the labora ...read more
This summer, in the introductory course I teach on the evolution and biology of human and animal behavior, I showed my students a website that demonstrates how to identify frog “genders.” I explained that this was a misuse of the term “gender”; what the author meant was how to identify frog sexes. Gender, I told the students, goes far beyond mere sex differences in appearance or behavior. It refers to something complex and abstract that may well be unique to Homo sapiens. ...read more
Humans have language and other animals don’t. That’s obvious, but how it happened is not. Since Darwin’s time, scientists have puzzled over the evolution of language. They can observe the present-day product: People today have the capacity for language, whether it be spoken, signed or written. And they can infer the starting state: The communication systems of other apes suggest abilities present in our shared ancestor.
But the million-dollar question is what happened in betwe ...read more
Author Vishay SinghPosted on Categories Discover Magazine