Sarah Lemprière

Jan 11, 2024 | science.org | Erkan Aydin |Caroline Ash |Sarah Lemprière

Celestial Mechanics A possible gap in the outer Solar SystemKeith T. SmithA gap in the distribution of minor objects orbiting the Sun beyond the Kuiper Belt might indicate the presence of a large body beyond the heliopause. PHOTO: NASA, ESA, AND G. BACON (STSCI)Open in viewerThe Kuiper Belt extends to about 50 astronomical units (au) from the Sun.

Aug 3, 2023 | science.org | Dario Bressan |Kai Wang |Michael Funk |Sarah Lemprière

Chemistry Drugs from turpentineMichael A. FunkFrom the inception of modern chemistry, many drugs, dyes, and fragrances have been derived from coal or oil. Although they are a very small fraction of the total carbon footprint, developing sustainable sources of these products is important to build up the sustainable chemistry sector. Tibbets et al. developed divergent syntheses of two common over-the-counter painkillers using monoterpenes that can be sourced from forestry by-products.