We are one of a kind because our genetic background says so. When our parents conceived us, one set of chromosomes from each of them merged to create a brand new diploid cell called zygote, which is already unique. Yet, such singularity doesn’t start with the zygote itself, but much earlier with our progenitors. The […]
There are people that have the feeling that if they get to know what something is made of automatically thay have learned something. This attitude is called reductionism. But take water, for example: how knowing that water is composed of molecules and that each of these molecules is composed of two atoms of hydrogen and […]
Humans have known and used the cannabis plant for as long as 10,000 years. During this time it has been utilized to such different things as to make ropes and clothes, to induce mental states in religious rituals and to treat diseases. Once considered a sacred plant, possession and use of cannabis is illegal in […]
Our solar system frequently seems a beauty competition where each planet proudly exhibits an attractive fingertip. Jupiter is a huge gaseous giant dressing with contrasted belts and zones and an ancient reddish spot. Saturn dances hula hoop with an impressive system of rings while loves to celebrate its birthdays triggering the biggest storms of the […]
Humanities & Social Sciences • Science • Technology • Weekly Selection
Why racism is not backed by science As we gather more information about the genomes of more people a conclusion seems more and more evident: there is not such thing as race. The Guardian Bright spots seen on Ceres Bright spots seen on the surface of dwarf planet Ceres in photos taken by the approaching […]
The ribosome may be a missing link in the evolution of life. This suggestive proposal has been published by Meredith Root-Bernstein, Oxford University, UK, and her father Robert Root-Bernstein, Michigan State University, USA, in the Journal of Theoretical Biology . Their hypothesis is that primordial ribosomes were self-replicating intermediates between the prebiotic world and the […]
There is a widespread concern about the increasing antibiotic resistance and the limited new drugs to treat infectious diseases, as discussed in a previous post . Consequently, the discovery of a new antibiotic active against a range of bacterial pathogens including Staphylococcus aureus has been greatly welcome, especially because no resistance to it has been […]
Trains have a huge seasonal problem each autumn: leaves. Yes, leaves from the trees. And now they are testing a solution: laser beams! It sounds absurd, but it will all make sense after we get into its science. Every autumn when leaves fall off the trees and beautifully cover parks and streets, railway infrastructure managers […]
Humanities & Social Sciences • Science • Technology • Weekly Selection
Neanderthals interbred with ancient Asians at 2 points in history Neanderthals interbred with the ancestors of Asians twice in ancient history, according to a pair of studies published in the American Journal of Human Genetics. The studies approached the same question from different directions, but came to the same conclusion, looking at why Asians have […]
In his book Climate Matters , John Broome (2012) examines climate change from the point of view of moral philosophy. Unlike many other essays that consider the ethics of social choice in this matter, Broome’s book contains some chapters that focus on the implications for individual ethics: “ Should you stop flying to distant places […]