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Warning signs for stabilizing global CO2 emissions

For 2017, Rob Jackson et al project emissions growth of 2.0% from 2016 levels, reaching a record 36.8 ± 2 Gt CO2. "Time is running out on our ability to keep global average temperature increases below 2 °C and, even more immediately, anything close to 1.5 °C," the researchers say

Air pollution harms bird health too

Review finds surprising lack of studies

Productive engagement with agriculture essential to monarch butterfly conservation

Participation of social scientists in understanding how farmers view their lands and stewardship practices will likely be key to successful engagement of agriculture in monarch conservation', says Douglas Landis

Planet human versus planet Earth—time for some win-win evidence

Perhaps the authors' most tricky assertion, and our biggest challenge, is that "residents of ecologically fragile areas need to survive and that their right to survival supersedes all other rights", says Carolyn Stephens

Carbon futures: a valiant attempt to bring scientific order from modeling chaos

Recent work illustrates how far away we are from confident prediction of future emission-concentration relationships, says David Schimel

Can geofinancial engineering get us out of hot water?

Using real-time environmental data from satellites could move financial markets and improve climate outcomes, says a team of financial professionals and scientists

Limiting climate change: what's most worth doing?

Both adolescents and researchers would do well to think carefully about what could promote the generational changes needed to reach a climate change target such as "well below 2 °C", say Paul Stern and Kimberly Wolske

Weather impacts on crop yields – searching for simple answers to a complex problem

Information on the extent to which crop yields are affected by specific extreme weather events is important for the insurance sector, food security studies, climate change impact assessments, guiding extension services and policy making, or supporting crop breeding efforts, say Stefan Siebert and colleagues

The underlying physics of natural hazards

Explore the USGS tsunami and earthquake research labs

Spying on volcanoes

Matthew Watson explains how drones are helping scientists to map and monitor active volcanoes – work that could save human lives

Do we ignore climate risk dynamics at our peril?

Less than one-third of assessments of future climate vulnerability account for the dynamics of both socio-economic and spatial aspects of climate risks, says Alexandra Jurgilevich

Biochar boosts crop yields in tropics but not in temperate zones

Worldwide meta-analysis reveals geographical split in benefit, as Simon Jeffery explains

Fighting fire with fire

Despite humans having seemingly "tamed" fire many millennia ago, there are still lots of open questions when it comes to the physics of wildfires, as Stephen Ornes discovers

Reframing climate change assessments around risk: recommendations for the US National Climate Assessment

Managing climate-related risks will be more difficult without a base of knowledge and practice aimed at evaluating specific risks, and their likelihood and consequences, as well as potential actions to promote resilience, say Chris Weaver et al

Does certification make coffee more sustainable?

Review by Ruth DeFries and colleagues assesses voluntary schemes for tropical commodities like coffee, bananas and tea

Meeting ecosystem needs while satisfying human demands

While trade-offs are inevitable, science can help identify compatible water management actions that not only buffer against the worst effects of climate change, but meet ecosystem needs while satisfying human demands, says Joshua Viers

Better data for assessing local climate policies

Cities and local governments have teamed up to combat climate change from the bottom up, yet little is known about the impact those measures have had on reducing emissions, according to Jan Minx

Latin American oil palm follows an unfamiliar route to avoid deforestation

The first large-scale assessment of oil palm expansion in Latin America and the Caribbean offers valuable insights on the key drivers of oil palm expansion at a fairly early stage, according to Navin Ramankutty and Jordan Graesser

Commercial cogeneration benefits depend on market rules, rates, and policies

Marilyn A Brown examines the policy implications of new findings on combined heat and power

Mapping farm size globally: benchmarking the smallholders debate

Farm size is a key component in the hot debates about the future of farms, food production, food security and smallholders, according to Patrick Meyfroidt