Among environmental issues facing the world today, land-based sources of water pollution is one of the most pressing. Adequate supplies of satisfactory-quality water are essential for the natural resources and ecological systems on which all life depends. Green chemistry offers a scientifically based set of solutions to protect water quality.

Physicians form a vital front in recognizing unusual clinical presentations that could herald a health threat. In the Flint water crisis, physicians can be credited with playing critical roles in both uncovering the crisis and providing leadership when government failed to respond effectively. Yet most physicians in Flint were not formally trained in advocacy or leadership and might have recogn...

BACKGROUND Irrigation of closed body spaces may lead to substantial perioperative fluid and electrolyte shifts. A syndrome occurring during transurethral resection of prostate (TURP), and a similar syndrome described in women undergoing transcervical endometrial ablation (TCEA) are both characterised by a spectrum of symptoms which may range from asymptomatic hyponatraemia to convulsions, coma,...

Food policy should serve humanity by advancing the humane goals of eradicating extreme poverty and hunger. However, these goals have recently been challenged by emerging forces including climate change, water scarcity, the energy crisis as well as the credit crisis. This paper analyses the overall role of these forces and population growth in redefining global food security. Specifically, globa...

A biomimetic "cactus spine" with hierarchical groovestructure is designed and fabricated using simple electrospinning. This novel artificial cactus spine possesses excellent fog collection and water transportation ability. A model cactus equipped with artificial spines also shows a great water storage capacity. The results can be helpful in the development of water collectors and may make a con...

The Permian-Triassic mass extinction was the most severe biotic crisis in the past 500 million years. Many hypotheses have been proposed to explain the crisis, but few account for the spectrum of extinction selectivity and subsequent recovery. Here we show that selective losses are best accounted for by a combination of lethally warm, shallow waters and anoxic deep waters that acted to severely...

PATIENT Male, 66. FINAL DIAGNOSIS Hypercalcemic crisis. SYMPTOMS Near drowning state. MEDICATION - CLINICAL PROCEDURE - SPECIALTY Critical care medicine. OBJECTIVE Challenging differential diagnosis. BACKGROUND Hypercalcemic crisis, generally caused by malignancy or primary hyperparathyroidism, is a life-threatening emergency that can result in multi-organ failure. Lowering the pa...