The origin of carbon in the Milky Way is a mystery but one source of many elements is not: Dying white dwarfs. As those dying stars pass into oblivion, they sprinkle their ashes into the cosmos. These ashes, spread via stellar winds, are enriched with many different chemical elements, including carbon.

The origin of carbon, an element essential to life on Earth, in the Milky Way galaxy is primarily speculation: some are in favor of the idea that low-mass stars blew off their carbon-rich envelopes by stellar winds became white dwarfs, while others place the major site of carbon's synthesis in the winds of massive stars that eventually exploded as supernovae.
Is citizen science a luxury for wealthy countries? Pastimes like bird watching, which require very little wealth to start, are more common in developed lands, but it would help fill the gaps in science elsewhere.
Surveys are not behavior but if surveys are any indication, elderly people are not willing to self-isolate, even knowing they are at greatest risk of getting COVID-19, the newest mutation of the coronavirus that originated in Wuhan, China, and and spread worldwide.

Survey results from 27 countries find that elderly people are not more compliant with COVID-19 preventive measures and  not more willing to isolate when asked, even though it is established that older adults appear are far more likely to be hospitalized or die from the disease. 
Though we've learned a lot about evolution in the last 150 years, when it comes to the details, some fundamental questions remain unanswered. Such as when and how extremely diverse groups of animals such as reptiles first evolved. For seventy-five years, adaptive radiation, the relatively fast evolution of many species from a single common ancestor, has been considered a major cause of biological diversity.

This has even been for the origins of major body plans (structural and developmental characteristics that identify a group of animals) and new lineages. Yet examining these rapid rates of evolution has been constrained by the methods used and the amount of data available.

Angiotensin converting enzyme inhibitor (ACE-i) or angiotensin II receptor blocker (ARB) medications are prescribed for conditions such as heart failure, high blood pressure or heart disease. They inhibit or block angiotensin, a chemical that causes arteries to become narrow, so are commonly prescribed for people with high blood pressure to relax and open blood vessels, lowering blood pressure.

They may also lower risk of colorectal cancer risk, the third most common cancer and second leading cause of cancer death worldwide.

Though old age, respiratory issues, blood clots, and obesity are risk factors for likelihood and severity of COVID-19, one group in the respiratory section needn't worry more; asthmatics.

Asthma does not appear to increase the risk for a person contracting COVID-19 or influence its severity.
Coronavirus and the COVID-19 disease it brings does not discriminate on race, creed, or color, but it does target people with pre-existing conditions. Like age, respiratory issues, and obesity, which are risk factors for nearly everything. And that can translate into cultural disparity.

Obese European minorities are up to two times higher the risk of contracting COVID-19 than white Europeans, a study has found. The study used body mass index (BMI), a controversial metric with numerous confounders, so caution is warranted, and cardiometabolic health. The researchers wanted to see if they could statistically link a person's weight to the relative risk of COVID-19 across ethnic groups.
Sweden did not lock down during COVID-19 and while aggressive epidemiological models promoted by bloggers wildly overstated the deaths that would occur, by an order of magnitude, it did produce more per capita deaths and greater healthcare demand than seen in countries with earlier, more stringent intervention.
When well-meaning people in Madagascar, urged on by poorly-informed environmentalists and carbon credit companies, rushed to plant a million trees in one January day, scientists were outraged. They were planting them in the country’s barren Central Highlands - and destroying an ancient ecosystem.

Ancient Madagascan grasslands fell victim to a modern frenzy to afforest the world that has gripped political leaders - and that is thanks to lobbyists paid by environmental lawyers.
On July 6th, at 7PM CET (1PM in NY, 10AM in California) I will be chatting online with David Orban on his show Searching For The Question Live (#sftql) about the present and future of particle physics, artificial intelligence and its applications to research, science communication, and the whereabouts. I hope you will be joining us, it should be fun!

For those of you who do not know who David Orban is: