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Global Climate Change01:50

Global Climate Change

29.2K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
29.2K
Wedges01:24

Wedges

1.9K
A wedge is a simple machine that serves various purposes, such as adjusting the elevation of structural or mechanical parts, providing stability for heavy objects, and splitting a body into two parts. This versatile tool can amplify an applied force, making it easier to manipulate large or heavy objects.
Consider using a wedge to lift a heavy slab. Here, the wedge functions by converting the applied force into a much larger force directed almost perpendicular to the initial force. This...
1.9K
Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

451
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
451
Design Example: Maintaining Level of an Embankment01:19

Design Example: Maintaining Level of an Embankment

485
Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
485
Sustainable Development01:43

Sustainable Development

15.3K
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
15.3K
Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

320
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
320

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相关实验视频

Updated: Mar 7, 2026

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
07:32

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Published on: June 4, 2021

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民主化气候变化缓解途径,使用现代化的稳定.

Nathan Johnson1, Iain Staffell1

  • 1Centre for Environmental Policy, Imperial College London, London, UK.

Science (New York, N.Y.)
|March 5, 2026
PubMed
概括

一个现代化的框架提供了超过6万亿个性化的气候变化缓解途径. 这种方法使个人能够创建自定义的脱碳计划,超越成本优化,促进更广泛的社会参与.

科学领域:

  • 气候科学 气候科学
  • 环境政策 环境政策
  • 决策分析 决策分析

背景情况:

  • 减缓气候变化需要广泛的社会参与.
  • 综合评估模型 (IAM) 提供了成本最优的途径,但缺乏针对个人偏好的定制.
  • 稳定框架简化了脱碳讨论,但需要现代化.

研究的目的:

  • 现代化稳定框架,以实现个性化的气候变化缓解.
  • 确定和量化到2050年大幅减少排放的战略.
  • 为了比较IAM青的策略与更广泛的选择.

主要方法:

  • 开发了一个现代化的框架,包含36个不同的缓解策略.
  • 量化了每个战略的部署规模,以便在2050年之前实现4%的全球减排.
  • 在现有的综合评估模型 (IAM) 中评估战略优先级.

主要成果:

  • 确定了36个战略,每个战略都能够在2050年前减轻全球排放量的4%.
  • 产生了超过6万亿个独特的个性化脱碳路径,以限制全球变暖到1.5°C.
  • 发现IAM优先考虑技术解决方案,而不是行为和基于自然的策略,协议较低.

更多相关视频

Author Spotlight: Unraveling the Role of Earthworms in Enhancing Mineral Weathering for CO2 Removal
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Author Spotlight: Unraveling the Role of Earthworms in Enhancing Mineral Weathering for CO2 Removal

Published on: November 10, 2023

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A Simple Planting Technique for Re-establishing Trees Where Frequent Inundation Occurs
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A Simple Planting Technique for Re-establishing Trees Where Frequent Inundation Occurs

Published on: January 26, 2018

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相关实验视频

Last Updated: Mar 7, 2026

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
07:32

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Published on: June 4, 2021

5.9K
Author Spotlight: Unraveling the Role of Earthworms in Enhancing Mineral Weathering for CO2 Removal
07:22

Author Spotlight: Unraveling the Role of Earthworms in Enhancing Mineral Weathering for CO2 Removal

Published on: November 10, 2023

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A Simple Planting Technique for Re-establishing Trees Where Frequent Inundation Occurs
04:41

A Simple Planting Technique for Re-establishing Trees Where Frequent Inundation Occurs

Published on: January 26, 2018

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结论:

  • 现代化的框架可以实现个性化脱碳路径的构建,超过6万亿个组合.
  • 这种方法使公众能够参与关于超越成本的气候解决方案的知情辩论.
  • 它强调了IAM的技术重点与更广泛的有效缓解策略之间的分歧.