Years in science: | 2018 2019 2020 2021 2022 2023 2024 |
Centuries: | 20th century · 21st century · 22nd century |
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Years: | 2018 2019 2020 2021 2022 2023 2024 |
2021 in science |
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Technology |
Social sciences |
Paleontology |
Extraterrestrial environment |
Terrestrial environment |
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This is a list of several significant scientific events that occurred or were scheduled to occur in 2021.
March 2021 in science |
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April 2021 in science |
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May 2021 in science |
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June 2021 in science |
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China has successfully landed a spacecraft on Mars, state media announced early on Saturday. The six-wheeled Zhurong robot was targeting Utopia Planitia...
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That is 126 years earlier than the generally accepted dating based on sediments in the Meerfelder Maar from the Eifel region in Germany. ... This means that the [onset of the Younger Dryas] also occurred in Central Europe 130 years earlier, around 12,870 years ago respectively. This is in line with the onset of the cooling in the North Atlantic region identified in ice cores from Greenland. ... 'This strong cooling did not take place time transgressively, as previously thought, but rather synchronously over the entire North Atlantic and Central European region,' said Frederick Reinig.
[Measurements] firmly date the [Laacher See eruption] to 13,006 ± 9 calibrated years before present (BP; taken as AD 1950), which is more than a century earlier than previously accepted. ...thereby dating the onset of the Younger Dryas to 12,807 ± 12 calibrated years BP, which is around 130 years earlier than thought.
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Compared to non-immunized guinea pigs, vaccinated animals exposed to infected ticks quickly developed redness at the tick bite site. None of the immunized animals developed Lyme disease if ticks were removed when redness developed. In contrast, about half of the control group became infected with B. burgdorferi after tick removal. When a single infected tick was attached to immunized guinea pigs and not removed, none of vaccinated animals were infected compared to 60 percent of control animals. However, protection waned in immunized guinea pigs if three ticks remained attached to the animal. Ticks in immunized animals were unable to feed aggressively and dislodged more quickly than those on guinea pigs in the control group.
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2020s articles
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