Collaborating Authors

Harnessing machine learning and big data to fight hunger


A group of Cornell researchers has received a $1 million grant from the U.S. Agency for International Development to use machine learning to rapidly analyze agricultural and food market conditions, aiming to better predict poverty and undernutrition in some of the world's poorest regions. The method will use open-source, freely available satellite data to measure solar-induced chlorophyll fluorescence (SIF) – photons emitted from plants during the process of photosynthesis, detected by satellite, which can monitor agricultural productivity. It will also consider land-surface temperature, which provides information about crop stress under water deficit or excessive heat, as well as food-price data. "A method that can use near real-time, low-cost or freely available remotely sensed data can speed up the delivery of this information, and sharply reduce the cost," said Chris Barrett, the Stephen B. and Janice G. Ashley Professor of Applied Economics and Management in the Charles H. Dyson School of Applied Economics and Management, and the principal investigator on the three-year grant. "If you are a humanitarian organization trying to really target your resources at the poorest rural areas, this seems a powerful diagnostic tool."

Experts reveal the effect of multiple crop failures

Daily Mail - Science & tech

Less than one-quarter of Earth's total cropland produces nearly three-quarters of the staple crops that feed the world's population – especially corn, wheat and rice, the most important cereal crops. These areas are our planet's major breadbaskets. Historically, when a crop failed in one of these breadbaskets, only nearby areas had to contend with shortages and rising prices. Drought-damaged corn on an Ohio farm, 2012.In 2012 heat and drought in the United States slashed national corn, soybean and other crop yields by up to 27 percent Famines are extreme events in which large populations lack adequate access to food, leading to malnutrition and death. Most of these deaths are caused by infectious diseases than starvation because severe malnutrition compromised immune systems.

Beans: A mighty tool in the fight for food security

Al Jazeera

In the Amhara region of Ethiopia, farmers have given up on one of their staple crops. "Once our village was a major producer of faba bean," says farmer Yeshewalul Tilaye, from the Chichet village of Tarma Ber, "but we lost hope." Disease and natural resource degradation have plagued the Amhara region, which has a 90 percent poverty rate and is particularly susceptible to both drought and heavy rainfall. Before the Ethiopian civil war broke out in the 1970s, pulses - the family to which faba beans belong - were the nation's second biggest export crop. Since then, production has decreased dramatically, partly due to recurrent droughts, prevailing diseases and a lack of investment in research to address these production constraints.

The pheromone that causes locusts to swarm is revealed

Daily Mail - Science & tech

Scientists have identified a chemical compound released by locusts that causes them to swarm. The pheromone – a chemical produced by an animal that affects the behaviour of others of its own species – is released by the migratory locust, or Locusta migratoria. Called 4-vinylanisole (4VA), it is primarily released from the hind legs and is detected by the antennae of other locusts and sensed by odour receptors. Now the unique perfume has been identified, a synthetic version of the chemical could be developed to lure locusts into traps to be killed, scientists claim. Locusta migratoria is the world's most widespread locust species, which devastates crops made for human consumption in a relentless drive to eat and reproduce.

AI Can Be Trained To Independently Make Scientific Predictions Based On Previous Knowledge


If you're a lover of coffee, it will come as unpleasant news that the price of coffee could potentially spike in the near future. Climate change and deforestation are threatening some of the biggest coffee species in the world, but AI could potentially help keep coffee relatively affordable. The combined forces of deforestation and climate change are threatening the production of many species of coffee, including the common Arabica species, which can be found in many of the most prolific blends and brews. Coffee farmers around the globe are having to deal with rising temperatures and the problems that are associated with them, such as periods of drought. One recent study published in the journals Global Change Biology and Science Advances found that there were substantial risks to many wild coffee species, with around 60% of 124 different wild coffee species being vulnerable to extinction.