It can be hard to know what to do when a loved one is addicted to opioids. Luckily, science offers some advice.

Abstracts: Opioid Addiction, Risky Olympics, and Climate Change

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• When a loved one becomes addicted to opioids, it can be hard to know what to do next. But based on the science, there are some steps you can take. (FiveThirtyEight)

The Rio Olympics is facing some major issues, including worries about the flu. (Visual by Will.Pimblett/Flickr)

Flu is likely to be a bigger risk than Zika at the Rio Olympics this August. (Visual by Will.Pimblett/Flickr)

• Officials insist that the risk of contracting Zika during the Olympics is low. In fact, the games will be happening during Brazil’s flu season, so influenza is likely to be of more concern. (Vox)

• Last month was the hottest June on record. According to the National Oceanic and Atmospheric Association (NOAA), ocean temperatures were just above what they were last year — the previous record holder — while land temperatures were tied. (BBC)

• Trees can act as carbon sinks — taking carbon out of the atmosphere in order to reach zero net emissions. Now, one company wants to take that further by cloning and planting giant sequoias in order to fight climate change. (Christian Science Monitor)

• Using MRI data collected through the NIH’s Human Connectome Project, scientists have created a new map of the brain that doubles the number of identified regions in the outer layer, the cerebral cortex. (Ars Technica)

• A second possible case of locally-transmitted Zika was been detected in Broward County, Florida, just two days after officials announced they were investigating a case in Miami-Dade County. (New York Times)

• How anesthesia works in the brain has long been a mystery. But according to new research in primates, the drug shuts down different brain regions over time until the animal loses consciousness.(Science News)

• And finally, the fight to create a new Bears Ears national monument in Utah is causing controversy and has sent rifts through local towns and tribes, like the Navajo and Ute. (High Country News)

This post has been updated to reflect the second possible case of locally-transmitted Zika detected in Florida.

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