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Birds are shrinking as the climate warms

Over 40 years of data show that migratory birds have been getting smaller as the climate warms. The birds' body masses, leg bone lengths, and overall body sizes all decreased, while their wingspans increased, likely linked to rising temperatures.

SourceField Museum·JournalEcology Letters·DateDec 4, 2019

Oyster deaths: American slipper limpet is innocent

Researchers from Kiel University found that the invasive American slipper limpet is not the main cause of European oyster population decline in the North Sea. The study analyzed historical collections of both species and revealed that the decline began in the late 19th century, before the limpet's introduction.

SourceKiel University·JournalPLOS ONE·DateNov 27, 2019

Through the FUBImethod, children engage in designing full-body interactive experiences

Researchers propose FUBImethod, a six-stage strategy for co-designing interactive experiences based on full-body interaction. Children's natural playfulness and expertise in movement are leveraged to strengthen their perspective in the creative process, leading to more effective design outcomes.

SourceUniversitat Pompeu Fabra - Barcelona·JournalInternational Journal of Human-Computer Studies·DateOct 24, 2019

Piranha fish swap old teeth for new simultaneously

Researchers at the University of Washington have confirmed that piranhas and pacus lose and regrow all teeth on one side of their face multiple times throughout their lives. This unique system allows them to distribute stress over their teeth, enabling efficient chewing and potentially justifying the loss of a full set of teeth.

SourceUniversity of Washington·JournalEvolutionary Ecology·DateOct 15, 2019

Cretan tomb's location may have strengthened territorial claim

A recent study published in Open Archaeology reveals that Tholos A at Apesokari, a Bronze Age circular tomb on Crete, was deliberately placed to control parcels of land and increase visibility from a specific path. The article's use of GIS analysis sheds new light on the role of burial sites and mortuary practices in Prepalatial Crete.

SourceDe Gruyter·JournalOpen Archaeology·DateOct 9, 2019

Extinction of Icelandic walrus coincides with Norse settlement

A study published in Molecular Biology and Evolution reveals that the Icelandic walrus went extinct shortly after Norse settlement around 870 AD, likely due to commercial hunting and ivory trade. The research used ancient DNA analyses and C14-dating to demonstrate the existence of a unique population of Icelandic walruses.

Playfully discover atom manipulation

The University of Vienna team uses a state-of-the-art electron microscope to demonstrate atom manipulation in graphene, revealing the locations of silicon impurities. A new online simulation game, Atom Tractor Beam, allows users to control the movement of these impurities using an electron beam.

SourceUniversity of Vienna·JournalAdvanced Functional Materials·DateJul 8, 2019

Finding 'Nemo's' family tree of anemones

Researchers built a phylogenetic tree based on DNA from newly collected anemone specimens to fill gaps in the origin of these species. They found that as a group, anemones independently evolved the ability to host clownfish three times throughout history, with two groups originating in the Tethys Sea.

SourceAmerican Museum of Natural History·JournalMolecular Phylogenetics and Evolution·DateJun 19, 2019

Shaking up the sloth family tree

New molecular evidence contradicts long-held views on sloth relationships, suggesting that tree sloths and extinct kin are more closely related than previously thought. The research uses both mitochondrial genome and protein collagen data to support convergent origins of adaptations in the six living tree sloth species.

SourceAmerican Museum of Natural History·JournalNature Ecology & Evolution·DateJun 6, 2019

Thai dinosaur is a cousin of T. rex

Scientists at the University of Bonn have identified two new dinosaur species in Thailand, both distant relatives of T. rex. The creatures were efficient predators with a more primitive structure than their tyrannosaur cousin.

SourceUniversity of Bonn·JournalActa Palaeontologica Polonica·DateMay 28, 2019

Scientists construct new family tree for perching birds

Researchers constructed a massive family tree using DNA samples from 221 bird specimens, discovering two African species in a distinct new passerine family and five additional proposed families. This study reveals that global temperature changes and continent colonization were not the sole drivers of passerine diversification.

SourceLouisiana State University·JournalProceedings of the National Academy of Sciences·DateApr 1, 2019