哈佛大学将为年收入不超过20万美元的家庭免除学费
哈佛大学宣布正在大幅扩大助学金的发放范围，对于家庭年收入不超过20万美元的本科生，将免除其学费；对于家庭年收入不超过10万美元的本科生，将完全免费。
宾夕法尼亚大学和麻省理工学院近期也采取了类似决定，在许多顶尖学校学费已经超过每年9万美元之际，这些计划将让更多家庭能够上得起名校。
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BY 科技圈🎗在花频道📮
Secure video calling is in high demand. As an alternative to Zoom, many people are using end-to-end encrypted apps such as WhatsApp, FaceTime or Signal to speak to friends and family face-to-face since coronavirus lockdowns started to take place across the world. There’s another option—secure communications app Telegram just added video calling to its feature set, available on both iOS and Android. The new feature is also super secure—like Signal and WhatsApp and unlike Zoom (yet), video calls will be end-to-end encrypted.
Telegram’s stand out feature is its encryption scheme that keeps messages and media secure in transit. The scheme is known as MTProto and is based on 256-bit AES encryption, RSA encryption, and Diffie-Hellman key exchange. The result of this complicated and technical-sounding jargon? A messaging service that claims to keep your data safe.Why do we say claims? When dealing with security, you always want to leave room for scrutiny, and a few cryptography experts have criticized the system. Overall, any level of encryption is better than none, but a level of discretion should always be observed with any online connected system, even Telegram.
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