These observances are a visible reminder of collective remembrance, sacrifice and gratitude. Lowering the U.S. or state flags to half-staff is a longstanding tradition that signifies public mourning ...

Governor Dan McKee ordered all state flags at half-staff from December 14, 2025, until further notice to honor the victims of a shooting at Brown University. The order recognizes the impact on victims ...

Artificial photosynthesis — splitting water with light — is an attractive way to make hydrogen, but what happens to the oxygen? A catalyst that aids in the efficient production of gaseous oxygen ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Vikki Velasquez is a researcher and writer ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. Almost 60 major low-carbon hydrogen projects including by oil groups BP and ExxonMobil have been cancelled or ...

Nvidia stock might not get the boost from a U.S. plan to permit export of artificial-intelligence chips to China investors are hoping it will. President Donald Trump said Monday he would allow ...

O2 customers could pay as little as £6 per month, avoid exit fees and the price hikes if they switch within their 30-day window Which? Team Championing consumers since 1957, our team of over 150 ...

Water electrolysis powered by renewable energy is a promising technology to produce green hydrogen, but widespread adoption is hindered by the lack of stable, low-cost catalysts coping with the ...

Hydrogen is a clean energy source with water vapor as its only emission, holding immense market potential. Investing in hydrogen stocks offers growth opportunities in a sector aiming for competitive ...