podcasts
How We Exterminated the Honey Bee
The Fungi That Kill Us
More than 1.6 million people die a year from fungal infections - about three times more than from malaria. Every year there are more fungal diseases in the world, becoming more deadly, and we still know little about them and how to fight them. Fungi are a separate kingdom in nature, neither animals nor plants. Some of their properties make it very difficult to fight them or develop drugs to treat the infections they cause. Death from fungal infections is, according to many researchers, a "silent epidemic".
The Spiritual Grandson of Aaron Aaronson
A little less than eight hundred million tons of wheat are harvested in the world annually, but soon it won't be enough to feed us all. The combination of population explosion and the climate crisis poses a fundamental challenge to science: how to feed everyone? One important avenue is to adapt crops to changing climate with the help of genetic intervention to improve crops, both in quantity and quality.
The Bacteria Wars
Although bacteria are single-celled creatures without a brain, they have a fifth of the genes that we humans have, and when it comes to wars for food and territory, they are as creative, diverse and violent as we are.
The guest in the current episode of HUJICAST, Dr. Assaf Levy, is the head of the Levy Laboratory in the Department of Plant Diseases and Microbiology. His research deals with bacteria wars - between themselves and between other microorganisms. The lab combines methods from the fields of microbiology, bioinformatics, molecular biology and plant sciences.
Pedestrian Seeds Get the Right of Way
Most plants in the world spread their seeds by the wind and by bee pollination. But there are also quite a few seeds that are pedestrians. Seeds that stay on the ground and have to fend for themselves completely and start wandering to find a suitable place to germinate, and of course manage to do all this without being eaten - and they do it in a fascinating variety of ways.
How do they migrate? Does a seed have legs? How far does sperm travel? We talked about all these things, and more, with Prof. Rebecca Elbaum, the guest in this episode of HUJICAST.
Reform and the Future of Agriculture
The agricultural reform came into effect in July 2022 and its stated goal is to lower the cost of living. The main points of the reform are easing the import of fruits and vegetables, removing tariffs, and changing the strict import regulations that prevent imports to Israel. On the other hand, the reform is supposed to provide protections for Israeli farmers through direct financial support and a budget for research and innovation. Will the reform, which was accepted after quite a few postponements and changes, actually succeed in lowering the cost of living? And no less important, what does the reform say about the future of farmers and agriculture in Israel - and in the long run, what does it say about the nutritional security of Israeli citizens.
We tried to answer these questions in this episode of HUJICAST with the help of Professor Eyal Kimchi, director of the Department of Environmental Economics and Management at the Institute of Environmental Sciences in the Faculty of Agriculture, Food and Environment at the Hebrew University.
The reform encompasses all branches of agriculture; Meat, poultry, fish, eggs, olive oil and more. In our conversation we focused on the farmers who provide most of our fruits and vegetables. Vegetables and fruits that are imported to Israel are grown mainly in Jordan, Turkey and Egypt.
Israel, as an island nation, is completely dependent on imports in order to survive; for example, we import 90 percent of our grains. Israel must also import fertilizers, feed for livestock and a variety of other products. The corona virus, and lately the war in Ukraine, have disrupted supply chains in the world and raised prices. Apart from that, the future is shrouded in fog - the combination of the climate crisis, the population explosion and the geopolitical situation in our region, and in general, cast a heavy shadow on our nutritional future. In recent years we have experienced an increase in prices of food due to the increase in price of inputs; energy, labor, fertilizers, seeds, and of course water. Agricultural production does not keep pace with population growth.
The reform in agriculture, says Professor Kimchi, is necessary - whether it was done corrrectly is a completely different question. Can the countries mentioned above be trusted to continue selling us food at today's favorable prices given the crises mentioned? Not at all sure. Are the protections promised to farmers sufficient? Not sure. Will lowering tariffs and opening up imports benefit consumers in such a centralized economy as in Israel? Past experience shows that not always.
We also discussed the importance of agriculture in Israel. After all, not all things are measured by the bottom line of the supermarket bill , right? There are other considerations; environmental, scenic, touristic, maintaining the borders and more. Won't the immediate profit of lowering prices and bringing farmers to their knees hurt us much more in the long run? Time will tell. This, according to Kimchi, is the big question: how many of the farmers will manage to survive the reform and what will be its effect on those who remain.
Sesame: From Ancient Seed to Modern Crop
Medicated Crops
Irrigating with Treated Wastewater
In a world facing increased water shortages, irrigating crops with treated wastewater isn’t just a good idea – it’s a necessity. But what happens when that wastewater contains traces of pharmaceuticals? Dr. Evyatar Ben Mordechay is analyzing how the pharmaceuticals that enter our sewage make their way into the agro-environment, and back into our bodies via crops we consume. Dr. Evyatar Ben Mordechay recently graduated and is now a postdoctoral researcher Department of Soil and Water Sciences.Salty & Dry: Plants Struggle to Survive
Healthy soil is critical for sustaining life on earth. In fact, every single bite of food starts as a plant growing in the ground. Dr. Yair Mau studies how the basic act of watering crops affects soil salinity, while gaining insights into basic processes that affect soil quality. He also studies how plants cope with environmental stressors posed by climate change. Dr. Yair Mau is a Senior Lecturer in the Department of Soil and Water Sciences.
The Problem With Plastic
Why the Bitterness?
Surviving a Hotter, Drier World
Mobilizing sunlight to fight poisonous mushrooms
Mushrooms - a magnificent kingdom and one that is still mostly mysterious to us. It is estimated that there are between five and ten million species of mushrooms in nature. We only know a small fraction.. Fungi are is more like people than bacteria.
This episode will not deal with edible mushrooms or hallucinogenic mushrooms, but with pathogenic fungi in agriculture.
More than half of plant diseases are caused by fungi, which can survive exposure to toxic substances and even develop resistance - a serious opponent.