[阅读]RC-c753vhOG2

Whether the languages of the ancient American peoples were used for expressing abstract universal concepts can be clearly answered i...

[阅读]RC-5fc3whOG2

At a certain period in Earth’s history, its atmosphere contained almost no oxygen, although plants were producing vast quantities ...

[阅读]RC-c683xhOG2

Animal signals, such as the complex songs of birds, tend to be costly. A bird, by singing, may forfeit time that could otherwise be ...

[阅读]RC-32b3yhOG2

Animal signals, such as the complex songs of birds, tend to be costly. A bird, by singing, may forfeit time that could otherwise be ...

[阅读]RC-e6c3zhOG2

The condition of scholarship devoted to the history of women in photography is confounding. Recent years have witnessed the posthumo...

[阅读]RC-d6440hOG2

When marine organisms called phytoplankton photosynthesize, they absorb carbon dioxide dissolved in seawater, potentially causing a ...

[阅读]RC-34141hOG2

When marine organisms called phytoplankton photosynthesize, they absorb carbon dioxide dissolved in seawater, potentially causing a ...

[阅读]RC-a1d42hOG2

Elements of the Philosophy of Newton, published by Voltaire in 1738, was an early attempt to popularize the scientific ideas of Isaa...

[阅读]RC-17e43hOG2

It would be expected that a novel by a figure as prominent as W. E. B. DuBois would attract the attention of literary critics. Addit...

[阅读]RC-f7144hOG2

Saturn’s giant moon Titan is the only planetary satellite with a significant atmosphere and the only body in the solar system othe...

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