Apr
07
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Apr
06
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 TBD

Apr
01
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 TBD

Mar
31
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 TBD

Mar
30
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Exoplanet surveys have revealed an amazing diversity of planets orbiting other stars in the last two decades. Studying the atmospheres of representative exoplanets is the key next step in leveraging these detections to further transform our understanding of planet formation and planetary physics. Additionally, atmospheric studies are critical for determining if any of the small habitable zone exoplanets that are now being detected are truly habitable, and even inhabited. In this talk I will describe recent results from exoplanet atmosphere observations with an emphasis on results from major programs using the Hubble Space...

Mar
26
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Mar
24
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 TBD

Mar
23
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 TBD

Mar
12
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Mar
10
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Mar
09
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Mar
09
Teaser:

One of the deepest and most controversial questions of our time is that of the origin of life. In this lecture a hypothesis is presented, according to which the temperature gradients existing deep in the earth (which leads to plate tectonics and the formation of undersea thermal vents), also led to the origin and evolution of life around those vents. Movies and data will be shown of experiments in which various stages of this scenario are presented: how thermal gradients led to plate tectonics, to DNA possible amplification in the thermal vents, and to huge increase of molecular...

Feb
26
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The emergence of attosecond spectroscopy has offered researchers a new experimental tool, which provides unprecedented temporal resolution for the direct measurement and control of electronic processes. Pioneering studies have obtained unique physical insights by taking...

Feb
24
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Dehydration and lack of fresh water are key problems for vertebrates that have secondarily invaded marine environments. However, recent investigations of 9 species representing the principal clades of sea snakes indicate these reptiles do not drink seawater but will drink fresh water at variable thresholds of dehydration, which these snakes tolerate well. Marine reptiles were previously thought to remain in water balance without consuming fresh water owing to the ability of extrarenal salt glands to excrete excess salts obtained either from prey or from drinking sea water directly. Thus, species of marine snakes which...

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