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Sci-tech

  • Hubble identifies unusual wrinkle in expansion rate of the universe

    Measuring the expansion rate of the universe was one of the Hubble Space Telescope's main goals when it was launched in 1990. Over the past 30 years, the space observatory has helped scientists discover and refine that accelerating rate -- as well as uncover a mysterious wrinkle that only brand-new physics may solve.

    A collection of images from the NASA/ESA Hubble Space Telescope features galaxies that are all hosts to both Cepheid variables and supernovae. (Source: NASA / ESA / Adam G. Riess (STScI, JHU) via CNN)

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Climate and Environment

Davos climate focus: Can 'going green' mean oil and gas?

As government officials, corporate leaders and other elites at the World Economic Forum grapple with how to confront climate change and its devastating effects, a central question is emerging: to what extent can oil and gas companies be part of a transition to lower-carbon fuels?

Ursula von der Leyen, President of the European Commission, speaks at the World Economic Forum in Davos, Switzerland on May 24, 2022. The annual meeting of the World Economic Forum is taking place in Davos from May 22 until May 26, 2022. (AP Photo/Markus Schreiber)

COP27 host Egypt will push for climate goals, allow protests

Egypt, host of the next United Nations summit on climate change, will push countries to make good on their pledges to sharply reduce greenhouse gas emissions, facilitate 'non-adversarial' talks on compensation to developing countries for global warming impacts and allow climate activists to protest, said the incoming president of COP27.

New floods in eastern South Africa displace more than 300

More than 300 people have been evacuated from their homes as a result of renewed heavy rains, flooding and mudslides in South Africa's KwaZulu-Natal province, weeks after severe flooding killed more than 400 people and displaced more than 40,000 others.