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気になった一文集(English ver. No. 30)

Trump may have breathed life into the project, but its future remains uncertain. The drop in global oil prices has reduced the short-term profitability of the tar sands, and the long term is even murkier, given the global trend towards low-carbon energy.

Renewable energies such as solar and wind are on the rise in the United States and abroad, and are now attracting more investment than fossil fuels. Coal’s US decline is likely to continue regardless of Trump’s promises, because the fuel is losing out to cheap natural gas, falling prices for renewables, and air-quality regulations that would be exceedingly hard to dismantle.

The irony is that the United States was the lead proponent of the Paris framework, which is essentially a collection of voluntary pledges. As a result, it could be hard for the Trump administration to push its agenda onto other countries.


Later this year, the world's largest conservation area of any kind will come into force, protecting 1.55 million square kilometres of the Ross Sea in Antarctica. This means that nine of the ten largest protected areas on Earth will be marine. Still, the combined coverage of designated and implemented MPAs currently accounts for just 4% of total ocean area, compared with 15% on land.

They should take note of Gill and colleagues' study, because it provides a timely warning that rapid expansion of protected areas by itself will not provide desired outcomes if there are large shortfalls in our capacity to manage, monitor and finance those areas.

There is certainly no easy recipe for success, but global meta-analyses such as that of Gill et al. and others will help us to further constrain what is needed to heal the ocean, and to provide long-term benefits to people.

How to heal an oceanNature 543, 630–631 (30 March 2017)


An explosion of ocean observations from the Argo float network, for example, solidified understanding that it is the heat content of the entire system, not just air temperature, that matters to measurements of global change.

Increased scrutiny of climate-change models should be welcomedNature 545, 6 (04 May 2017) “Nature Editorial”