English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Older vehicles produce a disproportionate share of total U.S. vehicle air emissions. Cars of 1971 or earlier vintage make up about 3.4 percent of total auto registrations and only 1.7 percent of total miles driven, yet produce 7.5 percent of the hydrocarbon (HC), 7.6 percent of the carbon monoxide (CO), and 4.7 percent of the nitrogen oxide (NOX) emissions of the fleet. In the Los Angeles Basin, these older cars play a still more important role in vehicle emissions: they are said to make up 6 percent of the total car population and 3 percent of the miles driven but 22 percent of the fleet’s HC, 15 percent of the CO, and 13 percent of the NOX emissions. 3 As a result, programs aimed at removing older, more polluting cars from the fleet could be a viable option for reducing urban air pollution.

OTA-Studie: "Retiring old cars. Programs to save gasoline and reduce emissions"