When cracks form in the concrete, they preferentially travel to the lime clasts, which have a higher surface area than other particles in the matrix. When water gets into the crack, it reacts with the lime to form a solution rich in calcium that dries and hardens as calcium carbonate, gluing the crack back together and preventing it from spreading further.
In 2019, archaeologists have unearthed a 300,000-year-old skull in the Hualongdong cave of Anhui province, eastern China. This discovery has created waves in the scientific world and may revolutionalize the way we look at human evolution and their early ancestors. The skull, known as HDL 6 (Hualongdong 6), was found along with 15 other specimens, including a nearly complete jawbone and leg bones. The remains belong to a young individual, estimated to be around 12 or 13 years old at the time of death.
unborn babies whose pregnant mothers are exposed to DCPA could experience changes to fetal thyroid hormone levels. Such changes are "generally linked to low birth weight, impaired brain development, decreased IQ, and impaired motor skills later in life, some of which may be irreversible," the EPA said
When the new original vial of Pfizer concentrate was examined under the stereomicroscope, it showed only a few moving worm-like entities or a few small particles,but contrastingly when it was diluted in a1:6ratio (0.3ml:1.8 ml) with normal saline following the recommended practice for injection into a human recipient, the contents appeared to wake up,come to life and get activate, revealing a profusion of various shapes of rods, key-shaped structures, and other formations within a few minutes. These new entities did not resemble any known, natural, or identifiable organic entities(Figure 5b —new Pfizer).
I have studied on dental X-ray exposure over the last few months, trying to see what a safe level for yearly exposure is... and every single source uses minimizing phrasing- as if they are rooting for an outcome, not providing facts.
"You are exposed to very little X-ray radiation." - is very different than - "You are exposed to .005 mSv."
While researching I found nearly all sources on exposure doses from natural radiation combine and conflate the different types of radiation. UV is not fucking X-ray - in the same way a .22 short round is not a 122mm depleted uranium round.
UV does not penetrate into your bones or refract off dental work metal, unlike X-rays can.
It appears there is effectively ZERO natural exposure to X-ray radiation. Any increase in exposure is an increase over baseline and effectively represents an infinite percentage increase over the natural baseline.
I am not a doctor or telling you what to do with your health.
an international team which retrieved a record-breaking 1,268m-long drill core (a long cylindrical sample of rock collected by the drill) of mantle rock from the seabed. This sample, which is more than six times longer than the previous core of mantle rock, has given us a glimpse into the composition of this mostly inaccessible layer of the Earth.
A group of long-lasting chemicals known as PFAS have been used in firefighting foam and some non-stick cookware, as well as food packaging, cosmetics and waterproof clothes.
PFAS is an umbrella term for a family of thousands of chemicals dubbed “forever chemicals” because they never break down in the environment. The chemicals discovered in Sydney's drinking water catchments have historically been used in fabric protector, food packaging and firefighting foam
Consumers want water repelling materials for adventure wear. Yeah it's called oilskin canvas ffs and it's been used for hundreds of years and doesnt give you dick cancer.
