In an apparent effort to allay serious public and scientific concerns about contamination threats from genetically engineered (GE) trees, on Aug. 3 researchers at Oregon State University claimed they had genetically engineered sterility into poplar trees. The real story of the study, however, is that the risks of genetically engineering trees are too great and can never fully be known.
By Hans Nicholas Jong
The report by the International Union for the Conservation of Nature (IUCN) comes amid mounting debate about the use of palm oil, with the European Union seeking to phase out the use of the ubiquitous commodity in biofuels by 2030, citing environmental and human rights violations in the production of the commodity.
On Friday, the 170+ nations in the International Maritime Organization set the first-ever emissions target for the shipping industry and agreed to halve CO2 emissions by 2050, based on 2008 levels.
By Andy Rowell
As the oil price recovers to over $65 a barrel last year, so do Shell's fortunes, with reported earnings of nearly $16 billion.
By Edward Barbier and Terry Iverson
This was the final step of a process that began when two U.S. subsidiaries of foreign solar panel makers filed a rarely used kind of trade complaint with the International Trade Commission. Trump largely followed the course of action the independent U.S. agency had recommended to protect domestic manufacturers from unfair competition.
By Paul Brown
Heating homes and offices without adding to the dangers of climate change is a major challenge for many cities, but re-imagined district heating is now offering an answer.
A district heating scheme is a network of insulated pipes used to deliver heat, in the form of hot water or steam, from where it is generated to wherever it is to be used.
By Jennifer Weeks
Much news about the environment in 2017 focused on controversies over Trump administration actions, such as proposals to promote more use of coal and budget cuts at relevant federal agencies. At the same time, however, many scholars across the U.S. are pursuing innovations that could help create a more sustainable world. Here we spotlight five examples from our 2017 archives.
By Deepak Kumar, Stephen P. Long and Vijay Singh
The aviation industry produces two percent of global human-induced carbon dioxide emissions. This share may seem relatively small—for perspective, electricity generation and home heating account for more than 40 percent—but aviation is one of the world's fastest-growing greenhouse gas sources. Demand for air travel is projected to double in the next 20 years.
Airlines are under pressure to reduce their carbon emissions, and are highly vulnerable to global oil price fluctuations. These challenges have spurred strong interest in biomass-derived jet fuels. Bio-jet fuel can be produced from various plant materials, including oil crops, sugar crops, starchy plants and lignocellulosic biomass, through various chemical and biological routes. However, the technologies to convert oil to jet fuel are at a more advanced stage of development and yield higher energy efficiency than other sources.