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| On the cover: In recent years, driven by the new round of scientific and technological revolution coupled with carbon neutrality, the energy structure is undergoing unprecedented changes. Biomass energy can be obtained from abundant resources by a number of application ways, which is zero-carbon and has unique effect of carbon negative emission. Meanwhile, advanced conversion technologies, such as BECCS, pyrolysis, and biohydrogen, are also joining the way to make a better bioenergy. Clean products of biomass have been promoted to a prospective future. Combination of biomass energy development and advanced technology will realize a more flexible and imaginative use of biomass, contributing to a green, low-carbon and sustainable development. For a bright and recyclable future, we should improve the use of biomass energy and unlock its huge potential for energy conservation and carbon reduction. |
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| Position: Home > issue > May 15, 2023 Volume 4, Issue 3 |
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| JWST's eyes on an alien world |
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A compilation of the transmission spectra of WASP-39b from four observational modes of JWST in the Transiting Exoplanet Community ERS program. Important chemical species are identified. The horizontal axis is in units of microns.
Our galaxy is believed to have more than a hundred billion planets, with over 5,000 of them discovered so far. Of these, only around 50 have unveiled their composition beyond the most prevalent hydrogen and helium. Why is it so difficult? Unlike the exploration of planets within our Solar System where we can send probes to gather samples, studying exoplanets is more akin to wine tasting¡ªwe must rely on our sense of smell. Remote sensing is currently the only approach available for characterizing exoplanets.
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