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).
