Biologists track the invasion of herbicide-resistant weeds into southwestern Ontario

A team led by biologists have identified the ways in which herbicide-resistant strains of the invasive common waterhemp weed have emerged in fields of soy and corn in southwestern Ontario. The resistance, first detected in 2010, spread thanks to two mechanisms: either pollen and seeds of resistant plants were physically dispersed by wind, water and other means, or resistance appeared through the spontaneous emergence of mutations that then spread.

Read more

Gel-like fluid designed to prevent wildfires

Scientists and engineers worked with state and local agencies to develop and test a long-lasting, environmentally benign fire-retarding material. If used on high-risk areas, the simple, affordable treatment could dramatically cut the number of fires that occur each year.

Read more

The flagellar hook: Making sense of bacterial motility

Researchers show how bacteria transmit motion from an inner motor to an outer tail through a flexible joint in the flagellum known as the hook. This finding could help in the fight against deadly bacterial infections. By better understanding how bacteria move, researchers may be able to improve disease prevention strategies.

Read more

AI system accurately detects key findings in chest X-rays of pneumonia patients within 10 seconds

From 20 minutes or more to 10 seconds. Researchers from Intermountain Healthcare and Stanford University say 10 seconds is about how quickly a new system they studied that utilizes artificial intelligence took to accurately identify key findings in chest X-rays of patients in the emergency department suspected of having pneumonia.

Read more

First-time pregnancy complications linked to increased risk of hypertension later in life

Women who experience complications such as preterm births and preeclampsia during their first pregnancy are nearly twice more likely than women without complications to develop high blood pressure later in life — some as quickly as 3 years later, according to a new study of more than 4,000 women.

Read more

Brave new world: Simple changes in intensity of weather events 'could be lethal'

Faced with extreme weather events and unprecedented environmental change, animals and plants are scrambling to catch up — with mixed results. A new model helps to predict the types of changes that could drive a given species to extinction.

Read more