Biodiversity today has the unusual property that 85% of plant and animal species live on
land rather than in the sea, and half of these live in tropical rainforests. An explosive boost to …

During the Paleocene-Eocene Thermal Maximum (PETM),∼ 56 Mya, thousands of
petagrams of carbon were released into the ocean-atmosphere system with attendant …

The end-Cretaceous event was catastrophic for terrestrial communities worldwide, yet its
long-lasting effect on tropical forests remains largely unknown. We quantified plant …

The Paleocene–Eocene Thermal Maximum (PETM; 56 Ma) is one of our best geological
analogs for understanding climate dynamics in a “greenhouse” world. However, proxy data …

Determining the timing of diversification of modern birds has been difficult. We combined
DNA sequences of clock-like genes for most avian families with 130 fossil birds to generate …

Abstract The Neotropical region (tropical America) is the most species rich region on Earth.
Several causes have been proposed to explain this extraordinary biodiversity, which may be …

Astronomical calculations reveal the Solar System's dynamical evolution, including its
chaoticity, and represent the backbone of cyclostratigraphy and astrochronology. An …

Tropical forests account for one‐third of the total metabolic activity of the Earth's land
surface. Hence, understanding the controls on tropical forest photosynthesis and respiration …

The early Eocene" equable climate problem", ie warm extratropical annual mean and above-
freezing winter temperatures evidenced by proxy records, has remained as one of the great …

There is a considerable controversy about whether western Amazonia was ever covered by
marine waters during the Miocene [23 to 5 Ma (million years ago)]. We investigated the …