The thymus (in Greek, ‘thýmos’ = vital energy) is a small endocrine gland typical of vertebrate animals located between the heart and the sternum. It is a lymphoid organ that is fully developed in the first months of pregnancy of the fetus and that increases in size until adolescence.
Category TOPICS
The effects of some forms of chemical poisoning acquired from the environment, such as endocrine disruptors, can be passed down up to three generations. At least in fish. Small fish that are exposed to even low levels of synthetic endocrine disrupting chemicals that have become common in many freshwater sources may end up transmitting the genetic impacts of these chemicals to their offspring who were never directly exposed. to the same chemicals, say researchers from Oregon State University in the United States.
It is not common for bird songs to vary easily, but a team of Canadian scientists has recorded a unique case with citizen help. In 20 years, white-throated sparrows have ‘viralized’ a rare song that ends with two notes instead of the traditional three, and has run more than 3.
Actor Joaquin Phoenix is a well-known longtime vegan and animal advocate, and has already tackled the outrages of the leather industry, famous for donning vegan leather to play the role of Johnny Cash, in a beautiful commercial shot by Michael Muller, Joaquín focuses his attention on wool and admits that he had not previously realized how cruel its production is.
Gross Ecosystem Product, or GEP, tries to account for nature's contribution to the economy. Gross Domestic Product: GDP is a simple way of describing the health of large and complicated economies. And for the past century, the goal of many countries has been to increase their GDP.
"Soil productivity must occupy an increasingly prominent place in the thinking of peoples and their drivers," said the American scientist Hugh Hammond Bennett, who dedicated his entire career to demonstrating that soil care directly influences capacity productive of them.
More food is produced than in any past era and yet one in seven people know hunger in this world. The current capitalist system has commodified the production and distribution of food by going beyond the needs of humanity, bypassing the peasantry, above ecosystems to maintain the rules of free "speculation" at the service of financial elites that do not contemplate a distribution according to social justice.
A commonly cited argument in favor of burning coal to generate electricity says it is a cheap and effective way to do it. However, that's no longer true: One-third of the world's coal plants are already more expensive to operate than building new renewable energy sources, along with improved battery storage solutions.
A technology NGO that promotes reforestation has planted 100,000 trees to recover the natural ecosystem.The southern yungas are one of the richest forest formations in Argentina, characterized by their high biological diversity and their protective role in soil retention and water.
Zoonoses - infectious diseases that are transmitted from animals to humans and vice versa - have existed "since humanity began to mobilize", but what is alarming about the current virus, according to anthropologist Philippe Descola, is the speed with which it has been "The capitalist development model is a kind of virus for our planet": interview with the anthropologist Philippe Descola And for this specialist in the indigenous peoples of the Amazon, the western development model is one of the culprits.
Birds that nest on the ground across farmland in Europe often face a singular threat: plows and other agricultural tools. Every spring, numerous farmland breeding birds fall victim to agricultural activities, as people do not see them in time before their nests are accidentally destroyed.
For those who like to be close to nature, birds are very welcome on the patio. They pollinate the flowers, sing all day long, and further embellish the garden landscape. If you want to attract birds, check out these tips on what you can do. Drinkers and feeders Birds will be attracted to your garden if you offer them food and water.
A compilation provides more than 1,100 scientific studies that account for the health and environmental impacts of glyphosate, the most widely used herbicide in the country and the world. Bayer-Monsanto is one of the companies that produces and markets it. There are more than 1,100 scientific studies that account for the effects of glyphosate on the environment and on health.
With the help of high-speed cameras and a computer model, US engineers have found that wave motion is vital to stabilize the flight of snakes that glide between tree branches. The discovery may help the development of new flying robots.
Mental health problems can arise when limits are not set. This can cause you to feel depressed, anxious, or traumatized when others cross boundaries that you didn't know you needed to communicate with. Unfortunately, it can be quite difficult to determine and defend your boundaries, especially if you've never done it before.
By stiffening the streets and highways, the trucks would use less fuel and save the planet carbon emissions.When you walk on a sandy beach, it takes more energy than walking on a sidewalk, because the weight of your body pushes towards the sand. It turns out that the same is true for vehicles that drive on highways.
In the spring, Pirmagrun Mountain, one of the world's last refuges for the endangered Persian leopard, towers over the surrounding countryside in Iraqi Kurdistan, with its rocky snow-capped peaks fading into an ancient oak forest that starts sparsely before running narrow, thickly wooded valleys.
After a five-hour trip by boat and another by land in a park ranger's backpack, Diego, the giant tortoise who helped save his species from extinction, finally reached his native Isla Española, in the emblematic Ecuadorian archipelago of Galápagos. Diego, who is more than 100 years old, will have the opportunity to live in his natural environment after eight decades of residing in a zoo and a conservation center, where he sired at least 800 young.
Over the past century, the planet has undergone dramatic changes for the worse. The number of people, which in 1900 was less than 2 billion, doubled and then doubled again to almost 8 billion today. At the same time, more and more virgin land has been converted to artificial uses: agriculture, infrastructure, housing.
· The mass tourism model focused on hypermobility constitutes a risk element for the spread and outbreaks of COVID-19. · The airplane is the most damaging means of transport for climate change and one of the sources of gas emissions greenhouse gases that experience faster growth with an increase of 26 in the period 2013-2019.
That we've spent months locked up at home to stop the spread of SARS-CoV-2 has provided scientists with an unprecedented opportunity. A global alliance of scientists is analyzing the effects of declining human activity on animal behavior in search of ways to share the planet that are more beneficial to all.