The concentration levels of nitrogen dioxide, a primary air contaminant, have declined 64% in major Spanish cities after the implementation of measures to fight COVID-19. Levels have fallen most in Barcelona, with an 83% ...
Environment
Mar 25, 2020
0
6
Transportation produces a sizable amount of greenhouse gas emissions, largely by using petroleum to power internal combustion engines. Alternatives –- for example, organic materials such as grasses to produce fuels or electricity ...
Environment
Feb 27, 2020
0
8
Crown architecture, which is composited by an ensemble of attributes related to branch characteristics and branching pattern of a tree, is a critical component for a tree to interact with the ambient environment and to compete ...
Plants & Animals
Feb 25, 2020
0
4
Using three ground-based telescopes, astronomers have conducted a long-term photometric monitoring of the Sh 2-170 star-forming region. The new observations have identified 71 variable stars in this region and provided essential ...
Motor-related brain activity, particularly its accurate detection, quantification and classification capabilities, is of great interest to researchers. They are searching for a better way to help patients with cognitive or ...
General Physics
Feb 4, 2020
0
181
Indian astronomers have conducted a comprehensive photometric, kinematic and variability study of a young open cluster known as NGC 1960. Results of the research shed more light on the properties of this cluster and its member ...
Using ESA's XMM-Newton spacecraft, astronomers have conducted X-ray observations of a peculiar Cepheid variable star known as V473 Lyr. Results of the study suggest that this star has a young, low-mass companion. The finding ...
Every time a weather extreme occurs, some people quickly jump in to say we've been through it all before: that worse events have happened in the past, or it's just part of natural climate variability.
Environment
Jan 14, 2020
3
27
The interiors of stars are largely mysterious regions because they are so difficult to observe directly. Our lack of understanding about the physical processes there, like rotation and the mixing of hot gas, introduces considerable ...
Astronomy
Jan 13, 2020
2
227
Have you noticed that Orion the Hunter—one of the most iconic and familiar of the wintertime constellations—is looking a little… different as of late? The culprit is its upper shoulder star Alpha Orionis, aka Betelgeuse, ...
Astronomy
Dec 27, 2019
14
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