美国科学新闻杂志 Science News - 2023 203-07

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老杨树 2024-09-22 36 8.62MB 36 页 10星币
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How an Indigenous
community in Panama
is escaping the
encroaching sea
Rising
waters
Keeping an Eye on Bird Flu
|
Black Hole on the Run
MAGAZINE OF THE SOCIETY FOR SCIENCE APRIL 8, 2023
Tomorrow needs creative solutions.
Michigan Tech is ready. Are you?
mtu.edu/tomorrow
At Michigan Tech,
researchers turn plastic
into protein powder.
Of all the world’s problems, faculty researcher Stephen
Techtmann has two on his mind: plastic pollution and
world hunger. Can one problem help solve the other?
In his award-winning microbiology lab at Michigan Tech,
Techtmann and his team of student researchers feed the
plastics to oil-eating bacteria that chew them up and use
them as fuel to grow. The end result doesn’t look like
plastic at all—it resembles a yeast byproduct that comes
from brewing beer. This majority-protein byproduct is
then dried out and turned into an edible powder. While
the initial goal is to use the protein powder for disaster
relief efforts, Techtmann hopes that plastic-turned-
protein-powder could become the sustainable meat
substitute of tomorrow.
www.sciencenews.org | April 8, 2023 1
FROM TOP: GLENN HARVEY; WEBB/ESA, NASA, CSA, J. LEE AND THE PHANGS-JWST TEAM, J. SCHMIDT; LYDIA V. LUNCZ
VOL. 203 | NO. 7
News
13
Departments
2 EDITOR’S NOTE
4 NOTEBOOK
Animal antibodies amp up
a plant’s immune system;
a fairy tale inspires a new
space rover design
29 REVIEWS & PREVIEWS
Period sets the record
straight on menstruation
31 FEEDBACK
32 SCIENCE VISUALIZED
Newborn stars blow
bubbles in their galaxies
Features
18 Swallowed Land
THE CLIMATE FIX Facing overcrowding and rising
seas, the Indigenous people of one Panamanian island
plan to relocate to a new mainland community. The
move could offer lessons for others threatened by
climate change. By Melba Newsome
24 Homework Help?
Students have been turning to ChatGPT for help on
assignments and exams. But educators worry about
accuracy, cheating and how AI writing tools could
transform learning. By Kathryn Hulick
24
COVER Many of the
homes on the island of
Gardi Sugdub, in Panama’s
Guna Yala province, sit
right at the edge of the
sea. Michael Adams
6 Scientists are watching
for signs that bird flu
might evolve the ability to
spread among humans
7 Race labels shouldn’t be
used in most genetics
studies, a panel concludes
8 A new federal rule
requires patients with
dense breasts be notified
after a mammogram
9 A racing heart induces
anxiety in mice, hinting
the emotion is not just
a matter of the brain
10 Photos of Venus taken
three decades ago
confirm the planet has
active volcanoes
11 Astronomers spot
a black hole fleeing
a distant galaxy
12 Eurasia’s Yamnaya
nomads may have been
the first horseback riders
Homo sapiens brought
bow-and-arrow hunting
to Europe
13 Observations of modern
monkeys hint that some
supposed Stone Age
tools were products of
chance, not planning
14 An ancient organism’s
disputed identity hints
that “life’s Big Bang”
continued after the
Cambrian Period
Dance lessons help
honeybees wiggle their
rears more informatively
15 Chernobyl’s dogs are
a distinct population,
an analysis of DNA finds
16 Here’s how wildfire
smoke eats away at
Earth’s ozone layer
17 Like a planetary
stacking doll, Earth’s
core may have its own
hidden core
32
摘要：

《美国科学新闻杂志 Science News - 2023 203-07》是一本聚焦全球前沿科研动态与突破性发现的权威期刊，涵盖物理、生物、医学、环境科学及技术等领域的最新研究成果。该期内容系统梳理了2023年度最具影响力的科学事件与深度分析，包括气候变化应对策略、基因编辑技术进展、太空探索新发现以及人工智能在科研中的应用等热点话题。对于科研工作者、教育从业者以及关注科技发展的普通读者而言，本刊以严谨的实证态度和通俗易懂的叙事风格，提供了高质量的科学信息与批判性思考视角。通过阅读本期内容，用户能

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作者：老杨树 分类：专业资料 价格：10星币 属性：36 页 大小：8.62MB 格式：PDF 时间：2024-09-22

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