Today's Top 5 Trending: Antiquated Water Systems, Zika Affects Brain, Endangered Penguins, Food Waste, Cameroon Food Insecurity

Our Drinking Water Systems Are a Disaster. What Can We Do? 

Every year, more than 32 billion cubic meters (41 billion cubic yards) of treated water are lost to leaks around the world — enough water to serve almost 400 million people, according to the World Bank. And although drinking water in the United States remains quite safe overall, contamination with bacteria or viruses regularly makes people sick. - Ensia

There's More Evidence That Zika Goes Straight to the Brain

Two studies published this week show that the Zika virus seems to prefer brain cells — and that it can cause many different types of damage to those cells. One of the studies shows that Zika — but not its close cousin, the dengue virus — destroys developing nerve cells. Another describes the cases of two Zika patients who developed nerve damage similar to that caused by multiple sclerosis. - NBC News

A New Zealand Penguin, Hard to Spot, Is Harder to Preserve

Incredibly shy, the yellow-eyed penguin is truly odd. Measuring about 65 centimeters, or just over two feet tall, with striking yellow eyes and a yellow band across its head, it is the rarest species of penguin, nesting in the forest and returning to it. It is also severely endangered. Despite various measures deployed in recent years to protect this penguin’s flocks, the outlook remains bleak. - New York Times

Wasted Food's Heavy Burden on Climate

As obesity levels soar, cutting the vast amount of food we waste could have a major impact on reducing the effects of climate change, as well as alleviating world hunger. - Climate News Network

Boko Haram Violence, Climate Change Drive Hunger in North Cameroon

Armed conflict between Boko Haram militants and Cameroon's armed forces in the region has made it difficult for some farmers to access their fields, deepening food security. At the same time, the region is hosting 75,000 Nigerians who have fled that country's Boko Haram insurgency and 82,000 internally displaced people affected by the spillover of the conflict to Cameroon since 2013, officials say. Just as problematic, climate change is gradually rendering the traditional agricultural calendar unreliable, making just getting in a crop hard work, farmers in the region say. - Thomson Reuters