Australia's Indigenous populations have played an important role in modifying the continent's landscape over millennia, particularly by using fire to create open spaces for daily activities. This continued until they left ...
Pollen can help scientists track changes in vegetation through time, as they respond to moderations of the climate, be that glaciation or deglaciation with transitions into and out of ice ages. Furthermore, it can help elucidate ...
The Shanidar cave sits in the Zagros mountains of the Kurdish autonomous region of Iraq, in a border region between Iran and southeast Türkiye. Within the cave is one of the longest-debated collections of Neanderthal remains.
A trio of paleontologists, two with the Russian Academy of Sciences, the third with the University of Silesia in Katowice, has identified the oldest known pollen-carrying insect. The research by Alexander Khramov, Tatiana ...
Researchers in the Department of Plant and Microbial Biology (PMB) have uncovered the intricate molecular processes that precede reproduction in flowering plants.
Plants & Animals
Jul 11, 2022
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706
A new study combining climate data with fossil records of large mammals that lived across Africa during the last 4 million years casts doubt on a long-standing hypothesis that repeated shifts in climate acted as major drivers ...
Evolution
Apr 11, 2022
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Ancient pollen samples and a new statistical approach may shed light on the global rate of change of vegetation and eventually on how much climate change and humans have played a part in altering landscapes, according to ...
Ecology
May 20, 2021
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14
Particle sorting is fundamental to biological and medical research, although existing methods are unable to sort large-sized particles via high-throughput sorting. In a new report, Y. Kasai and a research team in Japan, Germany ...
An amber fossil of a Cretaceous beetle has shed some light on the diet of one of the earliest pollinators of flowering plants.
Plants & Animals
Apr 12, 2021
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469
Soap bubbles facilitated the pollination of a pear orchard by delivering pollen grains to targeted flowers, demonstrating that this whimsical technique can successfully pollinate fruit-bearing plants. The study, from the ...
Plants & Animals
Jun 17, 2020
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972
Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (sperm cells). Pollen grains have a hard coat that protects the sperm cells during the process of their movement from the stamens to the pistil of flowering plants or from the male cone to the female cone of coniferous plants. When pollen lands on a compatible pistil or female cone (i.e., when pollination has occurred), it germinates and produces a pollen tube that transfers the sperm to the ovule (or female gametophyte). Individual pollen grains are small enough to require magnification to see detail.
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