Daniel Falk

Apr 22, 2024 | nature.com | Daniel Falk |Oliver Wings |Richard Unitt |Jon Wade

AbstractThe Eocene Geiseltal Konservat-Lagerstätte (Germany) is famous for reports of three dimensionally preserved soft tissues with sub-cellular detail. The proposed mode of preservation, direct replication in silica, is not known in other fossils and has not been verified using modern approaches. Here, we investigated the taphonomy of the Geiseltal anurans using diverse microbeam imaging and chemical analytical techniques.

Oct 12, 2023 | bigthink.com | Daniel Falk

At the heart of the Big Bang model of cosmic origins is the observation that the universe is expanding, something astronomers have known for nearly a century. And yet, determining just how fast the universe is expanding has been frustratingly difficult to accomplish. In fact, it’s worse than that: Using one type of measurement, based on the cosmic microwave background — radiation left over from the Big Bang — astronomers find one value for the universe’s expansion rate.