Matter & Energy News -- ScienceDaily

• Dark energy may have flipped from negative to positive 9.5 billion years ago
  A mysterious force driving the expansion of the Universe may have undergone a dramatic reversal billions of years ago. Scientists exploring an overlooked branch of an alternative gravity theory discovered that dark energy could have switched from negative to positive roughly 9.5 billion years ago, potentially changing how we understand cosmic history.
• Tiny flaws in diamonds could unlock a quantum computing revolution
  Scientists have discovered a faster way to identify diamond-based materials that could power quantum computers and sensors at room temperature. The breakthrough has already revealed promising new quantum building blocks that could help unlock computing capabilities far beyond those of today's supercomputers.