

How can you tell if the mask you’re wearing is protective enough against the coronavirus? Correspondent David Pogue volunteers as a test subject to see how N95s work and learns about the science of face coverings.

Originally published in 1962 and out of print for almost 50 years, The Notebooks and Drawings of Louis I. Kahn was the first book on influential 20th-century American architect Louis Kahn to feature his own images and words— and the first to capture the modern master’s powerful and unique spirit.
If you’re considering retirement abroad, you need information, and you need lots of it. But more than that, you need guidance on how to interpret that information. In many cases, you could decrease your monthly expenses, perhaps significantly, simply by relocating to a new country. Depending where in the world you choose to retire, you could enjoy big savings on housing, and other expenses. There are many tempting places in Europe, Latin America and Asia where you can live large on a small budget. You’ll also need to consider the visa application and residency process for moving to these countries. The countries mentioned in this video are some of the best option for retiring comfortably with low cost of living and access to healthcare. These countries are catching on quickly by attracting retirees with enticing retirement plans. So here are 12 Best countries to retire comfortably.
First up, science journalist Julia Rosen talks with host Sarah Crespi about a growing fleet of radar satellites that will soon be able to detect minute rises and drops of Earth’s surface—from a gently deflating volcano to a water-swollen field—on a daily basis.
Sarah also talks with Hui Cao, a professor of applied physics at Yale University, about a new way to generate enormous streams of random numbers faster than ever before, using a tiny laser that can fit on a computer chip.
Theoretical Physicist, String Theorist and Professor, Brian Greene looks at how time travel is portrayed in popular films. You can get his new book, Until the End of Time, here: https://amzn.to/3pTGyVx
Until the End of Time is Brian Greene’s breathtaking new exploration of the cosmos and our quest to understand it. Greene takes us on a journey across time, from our most refined understanding of the universe’s beginning, to the closest science can take us to the very end. He explores how life and mind emerged from the initial chaos, and how our minds, in coming to understand their own impermanence, seek in different ways to give meaning to experience: in story, myth, religion, creative expression, science, the quest for truth, and our longing for the timeless, or eternal.
Through a series of nested stories that explain distinct but interwoven layers of reality-from the quantum mechanics to consciousness to black holes-Greene provides us with a clearer sense of how we came to be, a finer picture of where we are now, and a firmer understanding of where we are headed. Yet all this understanding, which arose with the emergence of life, will dissolve with its conclusion. Which leaves us with one realisation: during our brief moment in the sun, we are tasked with the charge of finding our own meaning. Let us embark.