I recently returned to Washington, DC, after 10 days in India. New Delhi was warm, moist, crowded – and buzzing with mosquitoes. Fortunately, at least for now, their bites are little more than an itchy nuisance, which is just as well.

Specimens of goldenrod sewn into archival paper folders are stacked floor to ceiling inside metal cabinets at the Smithsonian National Museum of Natural History. The collection, housed in the herbarium, dates back to 1842 and is among five million historical records of plants from around the world cataloged there. Researchers turned to this collection of goldenrod – a widely distributed perennial plant that blooms across North America from summer to late fall – to study concentrations of protein in goldenrod pollen because it is a key late-season food source for bees.

The environment has long been a factor in violent conflict in South Sudan, especially with respect to control over oil. The first oil was discovered in 1999, and by 2007, hydrocarbons accounted for over 95 percent of Sudan’s income. South Sudan became independent in 2011 after years of war with the Sudanese government in Khartoum, intensified by local conflicts over access to oil-rich border areas. But beyond conflict, South Sudanese communities have also been ringing the alarm bell about pollution and health hazards caused by the oil industry.

A couple of weeks ago, the task force Michigan governor Rick Snyder appointed to investigate Flint’s now infamous water crisis issued its long-awaited report.

Blackened rivers snake the ring roads of Beijing, carrying pollution and often smelly water from one end of the city to another. The most polluted of these have been dubbed “foul and filthy” rivers (黑臭河) by China’s Ministry of the Environment (MEP) and Ministry of Housing and Urban-Rural Development (MOHURD). However, the government has decided to clean these up – and is enlisting the help of the public to do so.

Though governments have agreed to try to limit global warming to no more than two degrees Celsius above pre-industrial levels, a paper by James Hansen et al. in Atmospheric Chemistry and Physics finds that goal may not prevent major changes on an irreversible and unadaptable scale. Studying the last interglacial period, about 120,000 years ago, when the temperature was less than one degree Celsius warmer than today, Hansen et al. estimate sea level was six to nine meters higher than today.

Zika is a global health challenge. Since its outbreak in Brazil last May, the virus has spread to more than 30 countries and territories and ignited global discourse about family planning, vaccine development, reproductive rights, contraceptive security, and even gender norms.

Developing countries are in a pitched fight against the effects of climate change, and women, playing prominent roles in agriculture and household resource collection, are “at the front lines in the battle,” writes UN Framework Convention on Climate Change Executive Secretary Christiana Figueres, in a new report.