linkedin post 2021-03-12 06:49:37
If you look carefully on the right of this path, you can see the faint trace of an old wall, almost erased with time. View in LinkedIn
linkedin post 2021-03-12 06:47:06
UNACCEPTABLE. “We cannot make artificial life because we cannot agree on what life is. We cannot find life on Mars because we cannot agree what life represents. This is intolerable for any science. You can take a science in which there are two or three definitions for one thing. But a science in which the most important object has no definition? That’s absolutely unacceptable.” https://lnkd.in/gNSZgDT View in LinkedIn
linkedin post 2021-03-12 06:45:53
DRIVER OF BLACK HOLE FORMATION. “Our results strongly indicate that the dynamics of structure formation, rather than a critical Lyman–Werner flux, is the main driver of the formation of massive black holes in the early Universe.” https://www.nature.com/articles/s41586-019-0873-4 View in LinkedIn
linkedin post 2021-03-12 06:43:46
EARLY BLACK HOLES. “We find that pre-galactic haloes and their associated gas clouds that are exposed to a Lyman–Werner intensity roughly three times the intensity of the background radiation and that undergo at least one period of rapid mass growth early in their evolution are ideal environments for the formation of supermassive stars.” https://www.nature.com/articles/s41586-019-0873-4 View in LinkedIn
linkedin post 2021-03-15 05:19:38
BLACK HOLES. “We find that the seeds of massive black holes may be much more common than previously considered in overdense regions of the early Universe, with a co-moving number density up to 10(-3) per cubic megaparsec.” https://www.nature.com/articles/s41586-019-0873-4 View in LinkedIn
linkedin post 2021-03-13 05:59:52
EUSOCIALITY TRAITS. “In all the species that display the earliest stages of eusociality, behavior protects a persistent, defensible resource from predators, parasites, or competitors. The resource invariably consists of a nest and dependable food within foraging range of the nest. The females of many species of aculeate wasps, for example, construct nests and then provision them with paralyzed prey for the larvae to consume.” https://lnkd.in/drgWvGT View in LinkedIn
linkedin post 2021-03-14 06:01:02
First grape hyacinth of the spring. View in LinkedIn
linkedin post 2021-03-13 05:59:10
ROOTS OF ALTRUISM. “In this article I argue that the origin of altruism leading to eusociality cannot be deduced by aprioristic reasoning based on general models. It can, however, be revealed by reconstructing actual histories with empirical data.” https://lnkd.in/drgWvGT View in LinkedIn
linkedin post 2021-03-14 06:00:10
NOT A CLUE. “The standard cosmological model known as LambdaCDM can only explain 5% of the observable Universe. The remaining 95% is famously made up almost entirely of two invisible components called dark matter and dark energy.” https://lnkd.in/dVx65w5 View in LinkedIn
linkedin post 2021-03-13 05:58:05
COLLATERAL ALTRUISM. “Why, then, has eusociality been so rare? The answer is that it requires collateral altruism, which is behavior benefiting others at the cost of the lifetime production of offspring by the altruist. The existence of collateral altruism is one of the perennial problems of evolutionary biology. Given its genetic consequences, how can programmed sacrifices to collaterally related group members arise by natural selection?” https://lnkd.in/drgWvGT View in LinkedIn