Instead of carbon neutral, how about carbon negative?
A few months ago, The New York Times reported California researchers asking "provocative questions about the carbon footprint of food".
But now comes a team of researchers from the University of California, Davis, who have started asking provocative questions about the carbon footprint of food.
Dr Simon Gosling from Nottingham University has followed up his earlier comments to address some questions about the carbon impacts of dam construction.
Answers to ten frequently asked questions about bioenergy, carbon sinks and their role in global climate change, prepared by the International Energy Agency IEAA) Bioenergy Task 38, "Greenhouse Gas Balances of Biomass and Bioenergy Systems".
There are also questions about how a carbon tax would affect the carbon-intensive coal industry, which Trump voiced support for during his campaign.
But the contextual satellite images and maps of the entire country, and the accompanying scientific analysis, suggest all sorts of questions about why our carbon is distributed in the way that it is.
The Global Carbon Cycle features a glossary of terms, suggestions for further reading, and explanations of equations, as well as a forward-looking discussion of open questions about the global carbon cycle.
The respired carbon deepening hypothesis combines Cd/Ca, nitrogen and carbon isotopes of foraminifera (δ15N and δ13C), authigenic uranium (aU), biogenic (excess) Ba flux (Baxs) and opal production data from the last glacial period into an internally consistent framework, and in doing so poses important questions about deep ocean carbon sequestration on longer timescales.
That's because there is no approved design for the modular nuclear plant it envisioned, and there are too many questions about limits on carbon emissions from a natural gas plant, the company said.
