Researchers have genetically characterized almost 80,000 samples of wheat from public germplasm banks, "a massive-scale genotyping and diversity analysis" of the two types of wheat grown globally -- bread and pasta wheat -- and of 27 known wild species. The results show distinct biological groupings within bread wheats and suggest that a large proportion of the genetic diversity present in landraces has not been used to develop new high-yielding, resilient and nutritious varieties.

Researchers isolated eight novel polyphenols from the rarest type of propolis. Two of them were found to inhibit tumor cell proliferation in laboratory assays.

A literature review by researchers affiliated with universities in Brazil and the United States produces the first ever nationwide survey of land use impacts on water quality, showing how a lack of planning may affect the availability of a natural resource that is already becoming scarce.

The study by more than 30 Brazilian scientists investigated tens of thousands of genomic, transcriptomic and proteomic variables, discovering several alterations caused by the vírus.

The process occurs in active-core nuclei. A molecular gas cloud that accumulates in the central region is blown away by radiation from the black hole's accretion disk, forming a huge expanding hot bubble, whose radius can reach 300 light years.

Following recent canal expansions, marine fish are entering the Panama and Suez Canal waterways. Researchers are concerned that they may invade new habitat on the other side, causing unforeseen environmental or economic disasters.

The landmark EAT-Lancet report on food in the Anthropocene sets ambitious targets. Putting it into action, however, will require policymakers to make sustainable food systems a top-level priority. A new article charts a path forward.

Frieseomelitta varia is a docile species of economic interest as a pollinator. Its workers are sterile, and some of its genetic sequences are identical to those found in other eusocial bees, pointing to the conservation of ancestral traits.