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Field Museum


Rediscovery of the 'extinct' Pinatubo volcano mouse

A team of researchers rediscovered a species of mouse thought to be extinct after Mount Pinatubo's devastating eruption 30 years ago. The survey revealed that native rodents were abundant and thriving in the disturbed landscape, contradicting expectations.

SourceField Museum·JournalThe Philippine journal of science·DateJan 22, 2021

When good governments go bad

Researchers found that societies with good governance, characterized by equitable power and wealth distribution, tend to collapse more thoroughly than autocratic regimes. Leaders who abandon core principles and moral guidelines can destabilize their societies, leading to a loss of citizen confidence and fiscal health.

SourceField Museum·JournalFrontiers in Political Science·DateOct 16, 2020

Using math to examine the sex differences in dinosaurs

Paleontologists used a new approach to estimate sexual variation in dinosaur fossils, finding patterns in size differences between males and females. The study suggests that using effect size statistics can produce accurate estimates of sexual dimorphism even with limited fossil data.

SourceField Museum·JournalBiological Journal of the Linnean Society·DateAug 26, 2020

Scientists finally figure out how millipedes actually do it

Researchers have figured out how millipedes mate by using high-tech imaging techniques and blacklights that make the different tissues glow. The findings show that the male's gonopods insert sperm into the female's vulvae through tiny claws, while the female's vulvae seal up with a gooey secretion to trap the sperm.

SourceField Museum·JournalArthropod Structure & Development·DateFeb 13, 2020

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

Lichens are way younger than scientists thought

Lichens are now known to have evolved millions of years after complex plants, contradicting the long-held theory that they were among the first organisms to colonize land. This new understanding sheds light on the early evolution of ecosystems and the role of lichens in shaping the environment.

SourceField Museum·JournalGeobiology·DateNov 15, 2019

Bats don't rely on gut bacteria the way humans do

Researchers discovered that bats have fewer bacterial species living in their guts than in their mouths and skin. The kinds of bacteria living in the bats' guts varied from species to species without following any apparent evolutionary pattern, a stark contrast to other mammals.

SourceField Museum·JournalmSystems·DateNov 12, 2019

The deeper these octopuses live, the wartier their skin

Researchers discovered that warty and smooth-skinned octopuses from different depths are the same species. The deeper they live, the bumpier their skin and smaller their bodies. Genetic analysis confirmed these findings, indicating that environmental factors, such as food availability, influence the animals' appearance.

SourceField Museum·JournalBulletin of Marine Science·DateOct 8, 2019

When the dinosaurs died, lichens thrived

A new study reveals that lichens, organisms made of fungi and algae, seized the opportunity to evolve and diversify rapidly after the mass extinction event that wiped out the dinosaurs. The research found that some lichens grew sophisticated structures similar to plant leaves, filling the niches left vacant by extinct plants.

SourceField Museum·JournalScientific Reports·DateJun 28, 2019

Cities are key to saving monarch butterflies

Two new studies suggest that planting milkweed in cities could support 15-30% of the 1.8 billion stems needed to save Monarch butterflies. Urban areas offer a vast potential for creating habitat, with residential yards and low-quality green spaces being particularly valuable targets.

SourceField Museum·JournalFrontiers in Ecology and Evolution·DateJun 21, 2019

Baby tiger sharks eat songbirds

A study published in Ecology found that baby tiger sharks eat a variety of terrestrial birds, including songbirds like sparrows and woodpeckers. The sharks' stomachs contained remains from 41 out of 105 juvenile sharks, revealing a diet that includes land-dwelling bird species.

SourceField Museum·JournalEcology·DateMay 21, 2019

Lions vs. porcupines

Historical records show that lions are injured by porcupine quills when they attempt to hunt them. Young male lions are more likely to be injured or killed, and their injuries can impair their hunting abilities and even lead to man-eating.

SourceField Museum·JournalJournal of East African Natural History·DateMay 7, 2019

'X-ray gun' helps researchers pinpoint the origins of pottery found on ancient shipwreck

Archaeologists used a portable X-ray fluorescence detector to analyze ceramic pieces from the Java Sea Shipwreck, pinning their origins to specific kiln sites in southeastern China. The findings reveal complex trade networks between Asia and Africa in the 12th and 13th centuries, challenging traditional Eurocentric views of globalization.

SourceField Museum·JournalJournal of Archaeological Science·DateFeb 8, 2019

Iguana-sized dinosaur cousin discovered in Antarctica

Scientists have discovered an iguana-sized reptile, named Antarctanax shackletoni, with unique adaptations to the extreme Antarctic environment. The ancient creature, a carnivore that hunted early mammals and amphibians, provides insights into prehistoric Antarctica's rapid evolution and diversification after mass extinction events.

SourceField Museum·JournalJournal of Vertebrate Paleontology·DateJan 31, 2019