Sunday, February 24, 2019
Taking a short break - no post this week
Sunday, February 17, 2019
"Which species are we sure we can survive without?" Revisited
Two years ago I asked the question in the title of this piece. Now comes a wide-ranging study that suggests we are about to test that question in a major way.
The study predicts that at the current rate of loss of insect species, 40 percent could be gone "in the next few decades." What is particularly alarming is that this "could trigger wide-ranging cascading effects within several of the world's ecosystems." That means that many other life-forms including other animals and plants could find themselves without what they need to survive in this dangerous game of musical chairs orchestrated by humans. Might we be one of those species?
Insects do much of the crop pollination necessary for food production. A list of crops pollinated by bees is quite long. Humans could survive without these foods, but the nutrition and variety in our diets would be severely limited. And yet there is a greater problem. Outside of agriculture 80 to 95 percent of plant species require animal pollination. Since those plants are the base of every food chain, catastrophic declines in insect populations could lead to a collapse of existing ecosystems. The exact scope and effects of such a collapse cannot be fully anticipated. But it is doubtful humans would be unharmed.
Sunday, February 10, 2019
Is a key ingredient humans need to live about to run short?
Phosphorus is essential for all living organisms. So, it's not surprising that humans get their phosphorus from other living organisms, mostly plants, that have absorbed phosphorus from the soil.
The introduction of phosphate fertilizers made it possible to ensure that enough phosphorus for healthy plant growth is available in practically any farmland soils. At first, farmers had access to phosphate fertilizers from bone ash and later from phosphate deposits accumulated from bird and bat guano on certain tropical islands (some of which deposits were 30 feet deep before they were mined and completely exhausted). More recently, phosphates have come from mining rocks rich in phosphorus.
All seemed well for the long term as supplies of the rock phosphates were thought to be hundreds of years at current rates of consumption. But a group of researchers upended the consensus in 2009 forecasting that phosphate production could peak as early as 2030. A peak wouldn't be the end of phosphate production. But it would mark the beginning of an ongoing decline in phosphorus available from mines. This would come as a shock to a world food system accustomed to consistently rising phosphorus supplies needed to feed a growing population.
Sunday, February 03, 2019
Will anything slow down the U.S. LNG juggernaut?
It is the legally mandated purpose of a for-profit corporation to make money for its owners and to prioritize that goal above all else. So, it is no surprise that U.S. natural gas producers have been seeking relief from domestic prices that have generally hovered between $2 and $4 per thousand cubic feet for most of this decade.
Qatar Petroleum and Exxon Mobil Corp announced last week that they would be adding to investment in Texas in liquefied natural gas capacity for export from the United States, a move that was described as a response the immense volumes of gas coming from American shale deposits. With so many LNG projects being built and on the drawing board, will anything slow down the U.S. LNG juggernaut?
The fight over U.S. exports of natural gas is long since over. U.S. producers now have the right—like almost all other U.S. producers of commodities or manufactured products—to sell their products to the highest bidder wherever that bidder may be in the world.