Rising ivory prices threaten elephants

Illegal killing for ivory drives global decline in African elephants.

Illegal wildlife trade has reached alarming levels globally, extirpating populations of commercially valuable species. As a driver of biodiversity loss, quantifying illegal harvest is essential for conservation and sociopolitical affairs but notoriously difficult. Here we combine field-based carcass monitoring with fine-scale demographic data from an intensively studied wild African elephant po...

The Welfare Effects of Rising Imported Food Prices in Iran

Food products account for a significant amount of the Iranian imports. Despite the rising prices of food products over the last two decades, their imports have been increasing too. In this study import demand of the main imported food products is empirically analyzed using Quadratic AIDS. Welfare impacts are measured using compensated variation. The results indicate that all products, except te...

The Answer to Rising Gas Prices... Nitrogen?

User-optimal Storage with Rising Energy Prices

When energy prices fluctuate, small scale storage, such as provided by electric vehicles or uninterruptible power supplies, allows users to reduce their overall costs by buying in price troughs. However, if future prices are rising, a user may be inclined to store energy long-term. By analysing the structural properties of the charging schedule for energy storage systems,this paper demonstrates...

Rising food prices: A global crisis

• Food prices have been rising since 2000, spiked in early 2008, and may remain high for another ten years • Prompt action is needed to protect the poorest and support low-income countries faced by surging import bills • In the medium term, economic and agricultural growth can offset the damage, but this will require more determined efforts to boost food production Soaring food prices pose prob...